Five-String Progress

Handmade 5-String Fiddle coming along!

Oregon Douglas Fir top plate

There was a famous maker, years ago, (Otto Erdesz, 1917-2000) who often made top plates for violas and violins out of Douglas Fir. Professional players bought and played his instruments, and they are still being played today, although many classical players insist that European spruce is the only “proper wood” for an instrument soundboard. Frankly, I usually would have agreed: all my experience with Douglas Fir seemed to indicate that it would not be a very good choice, even though I have played one of his instruments, and it was excellent. So, until this instrument, I simply didn’t try it.

Early this winter, a friend gave me a load of clean, dry Douglas Fir firewood. I heat with wood, and we had all been told it would be a bad winter (it wasn’t) so I really appreciated the gift. As I split some of it, I noticed that, unlike most Douglas Fir, it had no twist at all, and split easily and cleanly. When I picked up a chunk and tapped it, it gave a very clear, bell-like ring. (Hah! That spells “time to try some fir!”)

So I found one of the few pieces long enough to use, and carefully split it into useable billets, then sawed a center-line to book-match a plate.

Douglas Fir billet with Rib Garland
Douglas Fir billet with Guarneri Rib Garland

I have been using a pattern modeled after the 1735 “Plowden” Guarneri del Gesu, a lot, lately, so I installed blocks in the mold, bent the ribs, and got going!

I had one more piece of “scrap” of Oregon Big Leaf Maple, from the 5-string Double bass I built last year, too,  and I was looking forward to making a fiddle out of it. I had already made one 5-string fiddle from scrap from the other side of the bass-back, (sold to a bluegrass fiddle player in Ohio) and it turned out very well, so I was anxious to get the “sister” instrument made.

Back Plate Arching nearly complete:

Back arching nearly complete.
Back arching nearly complete.

 

The neck actually came from a tree on my wife’s parent’s place. I got started on it, as well:

neck billet in progress
Neck billet in progress.

 

Beginning to cut out the scroll requires a lot of saw-cuts, to outline the actual curl of the scroll, and then to remove the waste wood, using either a saw or a gouge…I used the saw, in this case.

beginning the scroll cuts
Beginning the scroll cuts.

 

Continuing the scroll cuts.
Continuing the scroll cuts.

 

Then I use various gouges and chisels to complete the scroll and the inside of the pegbox.

Scroll and pegbox nearing completion.
Scroll and pegbox nearing completion.

 

After the scroll and pegbox are very close to complete, I will prepare and attach the fingerboard and shape the two as a unit. That hasn’t happened, yet, so the handle portion of the neck is still rough and untouched.

Scroll ready for fingerboard; Arching complete on back plate.
Scroll ready for fingerboard; Arching complete on back plate: ready for Graduations.

 

Completing the Front Plate

Meanwhile I completed the carving of the front plate, laid out and cut the f-holes and began the purfling. Cutting the purfling slots by hand on Douglas Fir is quite difficult, because the winter reeds are exceedingly hard, compared to the softer summer reeds, and the knife just “pops” over them so that it feels as though it is running over corrugated roofing. It took me much longer to purfle this plate than it usually does for a spruce plate. (Ah, well! Perhaps that is one reason so few use it!)  But the tap-tones of this plate are exceptionally strong and clear: I still have high hopes for the power and tone of the resulting instrument.

Purfling the front plate.
Purfling the front plate.

Garland leveled and Front Plate installed!

(I neglected to get photos of the bass-bar process: it is also Douglas Fir, from the same billet. I will show it after I remove the mold…sorry.)

Front plate installed and waiting for glue to dry.
Front plate installed and waiting for glue to dry.

 

The graduations for the back plate are nearly complete, but today was a long day, and I will have to finish them tomorrow. So, here is where the progress stands, for tonight:

Completed front plate on garland, with nearly completed back plate.
Completed front plate on garland, with nearly completed back plate.

 

Tomorrow! (yeah, tomorrow!)

I hope to get the back plate completed tomorrow, except for the purfling, which will wait until after I install the plate. Then I will prepare the fingerboard and get it glued onto the neck, and I will feel as though I am “On the home stretch!” (But it won’t really be true: there still will be a great deal of work left to do, before it is anywhere close to completed.)

 

Thanks for looking!

 

 

2021: Two New Five-String Fiddles on the Way

Two New Handmade Five String Fiddles Begun

One Guarneri-Style, One Oliver

The last two commissions were a five-string on the original Oliver Pattern and a five-string on the slightly-wider Guarneri pattern. Both sounded great, and both customers are very happy. So, that left me wondering which one to do next. The obvious answer: Both!

 

Five String fiddles Guarneri and Oliver, side by side.
Five String fiddles Guarneri and Oliver, side by side.

 

I’m trying a new neck and scroll design on the Guarneri model. I hope it works well, because I really like the graceful look.

The instrument on the left (modeled after the 1735 “Plowden” Guarneri, with modifications to acommodate five strings) is  left-over Oregon Big Leaf maple from building a five-string double bass, during the summer of last year (same as the Andy Pastor commission fiddle.)

Heavily Flamed Maple for the back plate.
Heavily Flamed Maple for the back plate.

 

The scroll (also Oregon Big Leaf Maple) is from a tree on the property where my wife grew up, and so are the ribs.  The back is from a tree on the next ridge of hills west: about ten miles by road, probably three miles in direct line-of-flight. (Same one from which the recent double bass was taken, as well as several other instruments I have made. The late Terry Howell, of Howell Tree Farm, gave me the entire log, so I have a good supply.)

Heavily flamed maple neck in progress.
Heavily flamed maple neck in progress.

Experiment:

I have also decided to try an experiment: This will be the first time I have attempted a 5-string bluegrass fiddle with a belly of Douglas Fir, as opposed to Spruce. Otto Erdesz was famous for using it successfully in many of his instruments, so, when a friend gave me some very straight, split Douglas Fir, I decided to make the attempt, on the Guarneri model. It is quite dense compared to spruce, but it rings like a bell, when I tap it with my finger, so, I think it will be good.

Bookmatched Douglas fir top plate with Guarneri-model garland.
Bookmatched Douglas fir top plate with Guarneri-model garland.

 

Douglas Fir Top Plate arching complete.
Douglas Fir Top Plate arching complete.

 

The back, as well as the ribs and the scroll on the right-hand instrument above (the Oliver-model) are all from the tree on my Mother- and Father-in-law’s property. The belly, as usual, is Sitka Spruce.

Spruce belly, Oregon Big Leaf Maple back and scroll.
Spruce belly, Oregon Big Leaf Maple back and scroll.

 

So, that is where things stand, today:

All the parts for the two new 5-string fiddles.
All the parts for the two new 5-string fiddles.

Slow Start due to Repairs and other Responsibilities

This has been a slow start: 2021 saw me needing to repair my ancient bandsaw, and, even more depressing, my drill press had succumbed to the misguided attention of a marauding mouse. (The little wretch had crawled up through the ventilation holes of the electric motor and chewed off all the insulation from about 4″ of wire!)

Saw:

The bandsaw required disassembly and drilling out a worn, threaded hole, and retapping for a helicoil. The machine will probably outlast me, now.

Drill Press:

The drill press motor had to be taken apart and a new wire soldered in place. (A friend did that one for me. I really lack confidence when it comes to electric motor repair.) Fortunately, the damage was limited to just that one wire. (Maybe the plastic insulation gave the mouse a belly-ache.)

Back in business:

At any rate, I now have both machines running again, and I was able to saw out the profiles for the remaining plates as well as drilling the pilot holes in each scroll.

I should be able to get more done, now. (Gotta prune the apple-trees, too… Spring is on the way!)

 

Thanks for looking.

Another new 5-String in Progress

Last five-string fiddle for 2020!

This is my original mold– my first five-string was built on this mold, as was the commissioned instrument from a year ago. I will not complete it before the end of this year, obviously, but it is on the way.

The neck and back are made of spalted, heavily flamed Big Leaf Maple, salvaged from the yard at the home where my wife grew up. Her mom and dad had the tree taken down a few years ago, and my son and I salvaged a little of it. The front plate is sitka spruce.

front plate arching complete
Front plate arching complete.

 

back plate arching complete
Back plate arching complete.

 

Wood for new fiddle.
Wood for new fiddle.

It will be a few weeks…and there is another coming right behind it, but on the Guarneri mold.

Thanks for looking.

 

First Complaint!

Nice Problem to have!

Addictive Fiddle!

I got a text message from Andy Pastor, stating his only complaint so far, regarding the new five-string fiddle he bought last week:

He isn’t getting enough sleep!

He finds that fiddle to be utterly addictive, and has been staying up ’til midnight playing the thing, even when he knows he has to get up and go to work in the morning! 🙂

Great problem to have!

Here is Andy, playing his new fiddle:

Playing the new 5-string Fiddle
Happy Fiddler!

 

And here are two sound clips (actually recorded in his bathroom where there are high, vaulted ceilings, producing a bit of an echo-effect…which he likes. )

🙂

First one is “St. Ann’s Reel” Second is “Arkansas Traveler.”

https://mail.google.com/mail/u/0?ui=2&ik=a7311bb001&attid=0.1.1&permmsgid=msg-f:1686643027999616458&th=176828e5d2ce6dca&view=att&disp=safe

 

Thanks for looking!

New Five-String Fiddle, done and gone!

The Call

A couple of months ago, I received a phone call. I glanced at the “caller-ID” thing, and I thought, “I don’t know anyone in Ohio: this is probably spam!” But I cautiously answered, and was surprised to hear: “Um, hi! Yes, I was interested in a five-string fiddle…” (I instantly changed gears, mentally, and shifted from “Is this another spam-call?” mode, into “Yes! How can I help you?” mode!)

Turned out he specifically wanted a handmade, luthier-made acoustic five-string violin. I had a couple in stock, but he looked at the pictures and asked, “What else have you got?”

(Hmmm! Now what?)

“Well, I have one that I had begun, using scrap from the five-string double bass I just completed….” So I sent him pictures of the beginnings of an instrument:

Wood for the new 5-string fiddle
Wood for the new 5-string fiddle

 

There wasn’t a great deal to see, but he liked it and asked how long it would take to complete it. I guessed “at least a month,” and he said, “Fine! Send me pictures as it progresses!” And that was that!

Progress Reports

So I sent photos and progress reports, and he asked questions.  We chatted via e-mail and phone chat messages, during that month, during which he saw things like:

Progress on back plate and neck.
Progress on back plate and neck.

 

Beginning graduation of the back plate.
Beginning graduation of the back plate.

 

Graduating the back plate.
Graduating the back plate.

 

Completing the Purfling weave on the back plate.
Completing the Purfling weave on the back plate, using wood purfling.

 

He was especially encouraged to see proof that I actually build my instruments from the raw wood. He had already discovered that there are makers who put their label on other people’s factory-made instruments and claim they made them. (If someone can’t afford a handmade instrument, I will offer the option to buy one purchased in the white, and finished in my shop, but I never put my personal label in such an instrument: I did not build it! My own work is all signed and numbered.)

Closed corpus, front view.
Closed corpus, front view.

 

Closed corpus, back view.
Closed corpus, back view.

 

Final varnish, front view.
Final varnish, front view.

 

Final varnish, back view.
Final varnish, back view.

 

And finally, the set-up instrument:

Finished Five-string Fiddle, Front View.
Finished Five-string Fiddle, Front View.

 

Side View.
Side View.

 

And Back View!
And Back View!

The Visit and Delivery

He was growing more and more attached to “his” instrument as it progressed, so, as it neared completion, he made plans to fly here to Oregon (with his family) to be the first to play it! This is what he encountered when he and his family arrived:

Dining table display of violins.
Dining table display of violins: the five-string is front and center!

 

He brought his wife and two sons with him, and they patiently waited (From about 1 PM to 10 PM!) while he played ten of my violins, three of my violas, and, of course, the “prize five-string!” (I still have “Orange Blossom Special” racing through my head, today!) This is how the living room looked when they left! 🙂

Living Room results.
Living Room results: the five-string fiddle is GONE!

 

He ultimately bought the five-string fiddle, packed it into a hard-shell case, and then he and his family headed off to the Pacific coast (the next morning) to hike around the Cannon Beach area, as well as Ecola State Park.

Family at Cannon Beach
Family at Cannon Beach
View from Ecola State Park trail
View from Ecola State Park trail.

 

They found a little shop in Cannon Beach where he bought a stand for his new fiddle:

Fiddle Stand for the New Five-string!
Fiddle Stand for the New Five-string!

And then they flew home to Ohio! But He graciously took time to write a review, and allowed me to post it here, including his name!

Andy Pastor Review

I’m leaving this message of gratitude to Chet Bishop and his family for others to see and hopefully help them make a decision to purchase one of his fine instruments.

I purchased a five-string violin which he had just begun carving months ago and which became a commission violin for me. I flew from Ohio to his beautiful place in Oregon where I had the pleasure to meet Chet, his wife Ann, and his son Brian Bishop. By the way, Brian is a premier guitar luthier who had several guitars with him as well as guitars in local well-known music stores. His guitars sound better than any Martin, Taylor, or Gibson I have heard (attention to detail and work performed inside the body of his guitars sets them apart).

There is so much to say about a Chet Bishop violin and the experience, so I’ll make it bullet points:

  • The sound of a Chet Bishop violin is perfectly balanced on all strings. This is not easy to get a deep clear tone from a C string on an acoustic violin, but this is his specialty. No issue getting that rich sound out of the C string with my lighter weight carbon fiber Coda Bow Diamond GX or my Franz Winkler Pernambuco bow. No need for a heavy bow to get the C to ring!
  • The violin is handmade (not a kit) and he knows exactly where the wood used is from. He has specific wood he uses ( and showed me his supply) which I feel gives each violin its own unique and beautiful sound and, of course, look. The quality of the build process is fully under Chet’s control. (Unfortunately, there are more than a few violin makers using pre-made “white” violin kits and selling them as hand-made. Be aware and do your investigation!)
  • The feel of the five-string Chet Bishop made violin is so similar to a four-string, it makes transitioning between a four and five-string violin easy. The string spacing and bridge/fingerboard arching are dialed-in, and his years of violin making are apparent.
  • The finish of my violin as well as all the other Chet Bishop violins that I had the pleasure to try is similar to the old Master violins from Italy. Cheap student violins all have that high glossed finish look, it’s hard to see the grain on the top of these foreign-made violins, and even harder to feel the ever-so-slight structure of the grain. Probably why these factory violins made in low-cost countries all sound the same; no real soul.
  • Attention to detail can be noticed at first glance, even by any non-musician. The unique purfling design on the back, the internal strengthening (used by the old master builders to make their instruments last hundreds of years), small unique features of the saddle and nut, the wood sealing and varnish process, cycloid arching of the back plate, just to list a few, all add to the quality and beauty. This detail will certainly allow the violin to actually improve over time (not that it needs to!!).
  • Then there is the experience of watching the violin get made. Chet provided daily progress photos and explanations, we communicated via text and sometimes email. This was very exciting. I know more about how a violin is made than I ever thought possible, at least without going to a violin-making school. I also got to know the luthier during this process, such a bonus to know your violin maker. He understood what music I played (in a band environment) and kept that in mind during the build process. (Although any of his violins could easily be (and are) top performers in any style: classical, jazz, country, bluegrass, spiritual, klezmer, Irish, Celtic….)
  • The benefit of visiting the violin maker and trying out the instrument cannot be overstated. Chet and his wife are extremely inviting people, as he said, “ordinary folk.” I probably tried out over 10 of his violins and violas, this was a real pleasure to hear each instrument and compare sounds to the five-string I purchased. Chet and his wife are so patient: I spent a full day with them (10hours). We did some minor adjustments to the five-string violin after I had played it: changed the chin rest, changed the e string, lowered the bridge a very slight amount, and a tiny soundpost move. He made sure everything felt perfect before I left. His wife made us some fantastic burritos for dinner, hot apple cider, and apple scones for snacks/dessert! As I said, very welcoming people, we had great conversation: Chet is extremely knowledgeable and I’m so grateful he shared some of this knowledge that day. Although these are truly the benefits of a visit, he has no issue shipping a violin, and I feel these minor adjustments could be handled remotely and/or by myself.
  • I’m including this last bullet point because… how many people can say they have a Sequoia tree on their property? He has at least two! (I got photos by both.) Chet is a wealth of knowledge about the area, I’m so thankful he suggested visiting Cannon Beach / Haystack Rock / Ecola State Park on the Pacific Ocean. This added to making the trip even more memorable. Even saw a herd of wild elk grazing just feet from me at one of the scenic views.

I hope this review not only expresses my gratitude to Chet Bishop and his family, but also provides assurance and guidance for anyone considering one of his fine instruments. He makes the whole violin-family of stringed instruments and his son, Brian Bishop, covers the family of guitars. Looking forward to another visit in the future. Truly an heirloom instrument!

Thank you, Chet!

Andy Pastor,
From Ohio

 

Here is one of the “baby” Sequoias which Andy liked so much: My mother planted them 50+ years ago. 🙂 They are only 5 or 6′ in diameter.

Young Sequoia tree
Young Sequoia tree

 

Thanks for the very kind review, Andy!

And to all my readers,

Thanks for looking!

New Website Coming!

Coming Soon!

I just began a new website for teaching-related articles, photographs, and videos. The Layman’s Institute will be at http://laymansinstitute.com and will have lots of teaching articles: whether math lessons, violin-making, or anything else.

No content is there, just yet: I will begin adding content in the next few days, I hope.

Hope to see you there.

Bass Stand, Padded and Secure

Padded, heavy Bass stand

Gotta have a stand for the bass…can’t let it just lie around the house.

Heavy base-plate adds stability for the five-string double bass.

Nearly 4
Nearly 4″ thick particle-board base-plate lowers the center of mass.

 

Exterior of 1/2
Exterior of 1/2″ birch plywood for strength and beauty. Ready for varnish

 

Varnish complete: ready for upholstery.
Varnish complete: ready for upholstery.

 

Carpet padding with vinyl upholstery.
Carpet padding with vinyl upholstery.

 

Upholstery begun...outside view.
Upholstery begun…outside view.

 

Inside view.
Inside view.

 

Upholstery completed.
Upholstery completed.

 

Bass stand with the bass, secure against tipping.
Bass stand with the bass, secure against tipping.

 

Looking good!
Looking good! Safe, too!

Travel Case Coming!

The next project has got to be a travel case for this bass. A “Travel-bass” with a removable neck is less than optimal without a case in which to travel. And such cases don’t seem to be readily available for reasonable prices.

So, it is back to the drawing-board for me. :) 🙂

Probably looking at a foam-core fiberglass case. Shouldn’t be too much harder than building a boat. :) 🙂

 

Thanks for looking.

Completing a Double Bass Bow

Six Years Ago…

I began to build a bass bow! but other things intervened, and I had to set it aside for a bit. I posted about it back then on my other website:
Bass Bow Beginning

Beginning of a bass bow.
Beginning of a bass bow.

 

Beginning a bass bow Frog.
Beginning a bass bow Frog.

But then I got another little block of time, and I made more progress. That was fine, but it was still not terribly high-priority, so it was again set aside while I did what life demanded. (I had gall-bladder surgery somewhere around that time…kinda captures the attention somehow… I had posted about that progress, and the surgery, as well. But it really set me back as far as productivity goes. Sigh…)
Bass Bow Progress

Frog Progress
Frog Progress

 

Status as of six years ago.
Status as of six years ago.

 

Annnd, as luck would have it, the gall-bladder surgery disturbed the existing scars from bowel surgery four years earlier, so I ended up with three hernias along the old scar, (sigh…) and was back in the hospital again for hernia repair. (Getting reaalllly tired of this game!)

But now… Everything seems to be healed up and I am once again productive, at one thing or another. 🙂

Completing a Bass Bow

I built my second upright bass, a five-string, 5/8-size double bass with a removable neck for safe transport, and I was struggling to adjust the sound. The bow I had was annoyingly cheap, and soft, and the hair as fine as I would expect on a violin bow… so it was frustrating, and I kept thinking, “I need a better bass bow!” So, the time had come!

Completed five-string double bass.
Completed five-string double bass.

I knew where the Hickory bow was, which I had begun years before, and most of the things I had bought to go with it, so I got moving on it. I finished inlaying the second gold star on the side of the frog, cut gold Mother-of-pearl for the slide and the dot on the end of the adjuster screw, and started on a ferrule.

Beginner’s Errors!

All you bowmakers are already shaking your heads, because you know (as I did not know, that I should have built the ferrule first, and then made the frog to fit the ferrule, instead of the other way around. It is much simpler to carve hardwood to match an existing metal structure, than to bend and braze (that’s what silver-solder is, technically) metal together in an attempt to match an existing wooden shape.  (Ah, well, never let it be said that I passed up an opportunity to learn things the hard way…)

Anyway…the ferrule was a real pain to make, because I failed to do it first. The under-slide, by comparison, was a piece of cake.

I had to make a new metal bow-tip, as I had accidentally made the original one a tiny bit too small. Also, I had chosen to use stainless steel, because it was cheap, easily available, and very durable. (Another beginner’s error: Yes, all of the above is true, but it is also much harder to cut, solder, file, and drill holes in than silver would have been.)

At any rate, I got back on the project, and in a day or so, had what looked like a promising bow! But I couldn’t find the hair I had bought. (I remember seeing it, and I remember putting it somewhere so I’d be sure to find it again. Must have been a really special place…I have no idea where it went.)

New stainless steel tip plate and longitudinal view of arching.
New stainless steel tip plate, ebony lining, and longitudinal view of arching.

 

Fully lined (with stainless steel) Bass Bow Frog with adjuster screw.
Fully stainless steel-lined Bass Bow Frog with stainless steel and Ipé adjuster screw.

 

Completed double Bass bow, minus windings and hair.
Completed double Bass bow… minus windings, thumb-pad, and hair.

 

I looked and looked for the hair I had bought, but had no luck: I finally decided to quit messing around, and just order more hair. Usually, there are specialist suppliers I would patronize, and I prefer to do so, but they all would take a week to ten days to deliver: so I ordered through Amazon, and had it the next evening! (Amazing!)

While I was waiting, I added the leather thumb-pad and the wire windings.

Completed Double Bass Bow
Completed Double Bass Bow with leather thumb-pad and wire windings.

 

And…that is what the new bow looks like!

Completed hickory bow for double bass.
Completed hickory bow for double bass.

 

And it Works!

I am grateful to be able to say, it works well! I get better tone and more volume with this bow than I did with the cheap student bow I already had.

Undoubtedly, a bow made of Hickory cannot be expected to match a good bow made of Ipé wood, let alone one made of Pernambuco. But this bow is quite satisfactory, and I feel pretty good about the project as a whole. I may try making another bow of Ipé, or Bois d’Arc, though, before I attempt a bow of Pernambuco.

 

Thanks for looking!

Setting up the Bass

Instrument Set-up

The Plan:

  1. Fit and install the End Pin. (Already done on this instrument.)
  2. Fit and install the Saddle. (Already done on this instrument)
  3. Fit and install the Tuners (in the case of a double bass, that means “tuning machines.” Already done on this instrument.)
  4. Fit and install the Soundpost. (already done on this instrument.)
  5. Fit and install the Nut, file the string slots to the correct depth in the correct places.
  6. Establish the correct length for the Tail-gut (or tail-wire in this case) and install it.
  7. Fit and install the Bridge, filing the string-slots once the height is correct.
  8. Install the Strings.
  9. Play for sound adjustment, string clearance adjustment, etc.

End-Pin

On violins and violas, the end-pin (usually called the end-button) only serves as an anchor-point for the tail-gut. But, in cellos and double basses, it also must serve as a height-adjustment, so that the instrument will rest at the correct height for the particular player. In this case, I had chosen an Indian Rosewood plug with a tubular steel end-pin fully adjustable and locked by a thumb-screw on the bass side. I installed it earlier, so here it is, without details about shaping the plug or reaming the hole:

Endpin assembly installed on five-string double bass.
Endpin assembly installed.

Saddle

I cut my saddles with a large radius on each of the upper corners, where the saddle is cut into the front plate. There is a strong likelihood, historically, that cracks will eventually develop, emanating from the corners of the saddle. They are so common that they have a name: “saddle-cracks.” There are two ways to try to avoid such cracks:

  1. The first is to make the mortise for the saddle (the part cut out of the front plate) a little wider than the actual saddle, by maybe a millimeter or so, so that, when (not if) the front plate shrinks during dry weather, it will not find itself up against the unmoveable saddle, and be forced to crack, to allow for the shrinkage. This is a good practice, and I try to follow it.
  2. The second is to make the saddle with sound corners so that there is no “notch” in the plate at the “corners” of the mortise, but rather a smooth rounded curve, which eliminates the stress-riser and minimizes the chance of a saddle crack in the first place. (Round discontinuities essentially do not cause stress risers, hence, do not cause cracks.) I always do this, (since about my sixth instrument) and will continue to do so.

I already explained all this, including the purpose of the saddle, in a previous post. Suffice it to say that this part is already completed.

Saddle with round corners, to prevent saddle cracks.
Saddle with round corners, to prevent saddle cracks.

Tuning Machines

There is a wide variety of choices for tuning machines for a double bass. Some are better than others, some fairly plain, but fully functional and reliable, others beautifully engraved or ornate in some other way, and understandably far more costly. Someone had to spend the time and money to do all that “pretty stuff,” so, if you want that, you gotta pay. I chose plain but functional. (They are pretty, too, but not fancy.)

Rubner tuning machine for a five-string double bass.
Rubner tuning machine (one of five.)

At any rate, they are already installed on this instrument, as of my last post:

Tuning machines installed on five-string double bass.
Tuning machines installed on five-string double bass.

 

Soundpost

The soundpost is a “dowel,” usually of fine-grained spruce, that spans the gap between the inside of the front plate and the inside of the back plate, just south of the treble bridge-foot. My understanding is that it transfers the vibration from the front plate to the back plate, and “couples” the two plates so that they work together to make the sound from the vibrations created at the strings (whether by bowing or plucking.)

There may be (probably is) more to this function: It is an important enough part of the set-up that in some languages, the soundpost is referred to as the “soul” of the instrument, and it is definitely one of the most important adjustments that can be made. It is held in place simply by the compressive force transferred through the bridge by the tensile stress on the strings. Adjusting the position of the soundpost has a profound effect on the character of the sound the instrument can produce.

I already installed the soundpost, but I fully anticipate that I will continue to adjust it as the instrument settles in, in an attempt to produce the best tone, volume and balance that I can achieve in the sound of the instrument.

Soundpost installed in a five-string double bass.
Soundpost installed, in preliminary position. Adjustments will be made from here.

Nut

The nut is the transverse piece of hardwood (usually Ebony, but in this case Ipé, ) across which all the strings are resting, directly above the fingerboard. It serves as a positive stop for all five strings,  so that the strings are not in actual contact with the fingerboard when the player is not fingering a note, but are suspended about 0.5 mm above the surface of the fingerboard. the idea is that an easy touch from the player’s finger should put the string in contact with the fingerboard at the correct position for the desired note. The nut is glued to the neck and fingerboard, usually, but in reality, it is held in place by string tension, and the glue is “just a formality.” (I glue them so that they can’t fall off and get lost, during transport or a string change.)

I carefully laid out the string locations, so that they are spaced equidistant, center-to-center, and then cut the slots for the strings using first a small razor-saw, and then a round file of the appropriate diameter for the string in question.

Nut installed and slots filed for a 5-string Double Bass.
Nut installed and slots filed for a 5-string Double Bass. The corners will be rounded later.

 

Tailpiece and Tail-wire

I chose to make the tailpiece of Ipé wood, to match the fingerboard, nut and saddle. The tailpiece fret (transverse bar forming a positive “stop” for all five strings) is also Ipé, and after being heated and bent, it resisted being glued. I eventually took it off entirely, scraped off all the failed glue-layers, washed it down with acetone to remove the oils in the wood, and reglued with epoxy. But this time, I anchored it with six small brass rivets. It is permanent, now! (Besides, I like the look of the shiny little brass rivets!)

I also attached the tail-wire; a 1/8″ diameter stainless-steel aircraft cable. I established the length so that the distance between the nut and bridge would be as close as possible to being in a 6:1 ratio with the distance between the bridge and the tailpiece fret.

Completed tailpiece assembly for a five-string double bass.
Completed tailpiece assembly for a five-string double bass.

 

Bridge

I chose a bridge blank that was tall enough to serve with the projection angle I had already established, and wide enough to comfortably accommodate five strings.

I fitted the bridge feet to the surface of the bass front-plate, so that it would have an airtight fit when placed between the inner “notches” on the f-holes, and centered over the centerline of the plate.

Once the fit of the feet was established, I marked the bridge for the approximate height, hoping to achieve a string clearance of about 11 mm above the end of the fingerboard, but erring on the side of “too high.” (I can’t very well “put it back,” if I remove too much wood.) I then marked the locations of the strings, giving them 25mm from center to center. I filed the string slots, so that the strings would stay put when installed, and I went ahead and installed the strings.

Bridge for 5-string double bass.
Bridge for 5-string double bass.

 

As it happened, I ended up with about 14mm under the B-string, ranging to 12 mm under the G-string…way too high. No problem: I simply re-marked the bridge, this time having a better idea of where things would line up, re-cut the top of the bridge, re-filed the string slots, and tried again. This time I had 11mm under the B-string, and 6mm under the G-string, with the strings in the middle at about 8mm. That is acceptable, so I finished trimming excess wood from the bridge, tuned up the strings, and I  was ready for the final adjustments for sound.

Five-string double bass, set-up and ready for final adjustments.
Five-string double bass set-up and ready for final adjustments.

 

It is quite a relief to me to finally have this instrument nearly complete. It was actually begun several years ago; but it was set aside for a variety of reasons, and only resurrected as a project, this Spring.

The sound, at first set-up, is satisfactory, but I hope to achieve a better balance, more volume, and better clarity as the instrument “settles in’ a bit, and with subsequent adjustments of the soundpost. But for now, I’m happy with it. It looks good and sounds good. For a brand-new instrument, that is a good start.

Completed 5-string double bass with cello in the background
Completed 5-string double bass with cello in the background.

 

So, for now, that is it! There are a few “finishing touches” and re-touch of varnish, etc, as well as the aforementioned sound adjustments, but the bass is essentially complete!

I hope to make all the necessary adjustments, and then find a player or two to “test-drive” it for me, since I am not a player, and can’t do it justice.

I will post the “verdicts” from those players when they happen.

 

Thanks for looking.

 

 

 

 

Completing the Varnish

Completing the Varnish

Protecting the Color

The color varnish, as you might imagine, gets the instrument looking the way we want, but the clear coats keep it that way…we hope.

So, after the color coats were mostly complete, I waited a few days for the varnish to cure a bit and then added two clear coats as a protection for the color coats, so that they will not experience undue wear.

Final clear coats of varnish on five-string double bass.
Final clear coats of varnish on five-string double bass in sunlight.

 

Clear coat on double bass.
Final clear coat; Back view in sunlight.

 

Final clear coats in the shade on Double bass.
Final clear coats in the shade.

There is still a lot of work left to do at this point: There will be endless “re-touch” of spots in the varnish that I wasn’t quite satisfied with, but they can wait until after the set-up is under way.

Saddle

I usually wait until the varnish is complete, before installing the saddle. The saddle is the transverse piece of hardwood upon which the tail gut rests, as it crosses the edge of the front plate. (Ebony, frequently, but, as I had opted for an Ipé fingerboard, Ipé seemed the right choice for the saddle as well.)

I make my saddles with radiused ends, to avoid saddle-cracks. To some extent, saddle cracks are caused by the shrinking and swelling of the spruce plate against an essentially unmoveable ebony (or Ipé) saddle. However, the other factor (possibly more important) is that, for hundreds of years, luthiers have cut the saddle with sharp-cornered, square ends, requiring a sharp-cornered square-ended mortise in the spruce…which inevitably inclined itself toward eventual cracks. Sharp corners are extreme stress risers.

Round discontinuities (holes, for example) do not cause stress risers, and are far less likely to cause cracks. I try to leave the ends just a little loose, as do most luthiers, but the fact is, the sharp notch is the primary cause of the cracks. So I make round corners.

Saddle with round-cornered ends.
Saddle with round-cornered ends.

 

Tuning Machines

The next task was the tuning machines. There are many possibilities to choose from: I chose these tuning machines partly based on looks, partly on cost, but primarily because, with the curvy pegbox, I wasn’t completely sure that any other style could be made to work. (There are some multi-piece tuning machines, which, I would imagine, could be made to fit nearly any configuration, but I have no experience with those, so I opted for something I knew about.)

Anyway, I knew that this type of tuning machine has a tapered spindle, which is not designed to go all the way through the pegbox, so I designed and built a small reamer, all wood, except for the blade, which is spring steel (just because that is what I had available.) It works well, but I have to be gentle with it, and stop periodically to clean the chips from the reamer.

Handmade reamer for fitting double bass tuning machines.
Handmade reamer for fitting double bass tuning machines.

I made a template, laying out the hole locations with the hope that I could avoid the strings from the G and D tuners rubbing on the tuners below them in the pegbox. I used the template to lay out the holes on the pegbox, then drilled to appropriate depths and used the reamer to taper the holes to match the spindles of the tuning machines.

Finally, I installed the machines and secured them with screws.

Tuning machines installed on five-string double bass.
Tuning machines installed on five-string double bass.

 

It was amazing to see how much weight the tuning machines added. The bass no longer easily balances on the two bouts: it wants to rock down and put its head on the floor!

Ready for set-up!

I installed the nut at this point, as well, so the bass was really complete.

Five-string Double Bass, ready for set-up!
Five-string Double Bass, ready for set-up!

 

If you have sharp eyes, you will probably notice the hole above the tuning machines on the bass side. The pegbox was narrow enough there, that I actually went through the second side by accident, and was forced to create a plug for the hole, from some leftover rib material. I cut it to exactly fit the hole, and glued it in place, pressing it home, so that it was nearly exactly flush, then scraped the wood of the plug to exactly match the wood of the pegbox, and was ready to begin varnishing to complete the repair.

Repairs in progress for pegbox damage.
Repairs in progress for pegbox damage. When complete, the repair will be virtually invisible.

 

Anyway… that is as far as I wanted to go today. Some of you may have known from other forums’ content, that I had also had trouble getting the tailpiece fret to “stay glued” in its slot. So I eventually gave up, removed the fret, scraped all the layers of glue down to clean wood, and washed the Ipé with acetone. Then I reglued with epoxy, but this time I drilled and anchored the fret with six brass rivets! (It’s permanent, this time!)

Completed tailpiece for 5-string double bass.
Completed tailpiece.

Next time, I hope to complete the set-up of the bass and have it ready to play!

Thanks for looking.