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Standar measurements for wooden pegs?   You are logged in as Guest
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pbekkerh

 

Posts: 32
Joined: Dec. 11 2012
 

Standar measurements for wooden pegs? 

Hello. I am restoring an old guitar back from mechanical to wooden pegs and wonder if there is a standard or an ideal for peg measurements?

I have some pegs that are, I think the right length, about 45 mm but then they are very thick 8.6x7.3 mm and I think it might be difficult get in tune with these.

Any ideas?



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  REPORT THIS POST AS INAPPROPRIATE |  Date Mar. 22 2020 11:47:04
 
ernandez R

Posts: 525
Joined: Mar. 25 2019
From: Alaska USA

RE: Standar measurements for wooden ... (in reply to pbekkerh

Phek..

It's really tricky rounding up information on pegs. Search luthery but bowed instruments.

Guitars start with viola pegs. There are a few threads here on the foro where some thin then down a bit.

You need a 30-1 taper ream and can purchase are make a peg scraper.

I start by pre drilling the holes from the front using a drill press. I angle mine forward on the top slightly, though not traditional it in sports a self tightening tendency. Then I ream from the back. Inportant your pilot holes are a small amount bigger then the end of your ream or you can chip out your headstock vaneer in a way that will make a grown man cry. Don't ask...

I then chuck the taper ream an a drill press and set the depth accordingly with test material. Most seem to hand fit all this but I find I can make all my holes and pegs exact so they are all interchangeable.

The pegs do not come come properly tapered. You need to set up your peg scraper, think giant pencil sharpener, to shave the peg at both the proper taper and diameter. Best to use a pair of calipers for measuring.

I make ten pegs to start with: one to screw up and one to keep with the guitar as a spare. I also make a block with tapered holes keeping the same precision so I can see if one peg is different and not have one peg disappear in the shop. Don't laugh...

I case harden my pegs and reeled holes, once they are mostly perfect, with thin CA then carfull shave and ream so they are exactly where I want them in the headstock with the same force one would set a peg with a string on it. It's one of those things you will get to know...

I fiddle around with them, in and out, let them sit a day or two, fiddle with them some more, then and only then do I drill the string hole.

Peg dope and string up! Again a day or two then...

Last of all I cut the small end to length so they don't blow out when while you drill the string holes. A dab of thin CA on the cut top and in the holes and you are done.

Peg dope, string up, and then share your experience here on the foro in exchange for me writing this ;)

By the way I make my own pegs: about 3/16 inch at the string end top.
Like you mention thinner is easier and more precise to tune.

If you search around the Delcamp Luthiery forum I've have some in processe photos and there are a few in my Instagram page link below my signature.


HR



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_____________________________

I prefer my flamenco guitar spicy,
doesn't have to be fast,
should have some meat on the bones,
can be raw or well done,
as long as it doesn't sound like it's turning green on an elevator floor.

www.instagram.com/threeriversguitars
  REPORT THIS POST AS INAPPROPRIATE |  Date Mar. 22 2020 21:00:33
 
pbekkerh

 

Posts: 32
Joined: Dec. 11 2012
 

RE: Standar measurements for wooden ... (in reply to pbekkerh

Thank you for the long answer.

I have installed a couple of pegs, so I'm familiar with the process but I don't have a pegshaver as I only do so few, so I adapt them by sanding by hand.

3/16th is about 4.7 mm which surprises me a bit. What is the stem length and upper diameter?

I have a baroque replica where the pegs are 7.0 x 6.0 x 46 mm (sorry I can't handle those inch measurements)

Your pegs look quite short, compared to what I see on other guitars but then I've wondered why they had to be so long . ;-)



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  REPORT THIS POST AS INAPPROPRIATE |  Date Mar. 23 2020 0:35:33
 
ernandez R

Posts: 525
Joined: Mar. 25 2019
From: Alaska USA

RE: Standar measurements for wooden ... (in reply to pbekkerh

Pbekkerh

My pegs are not standard. I make mine short enough so when the guitar is laying on its back the pegs do not touch. Mine are also much thinner for more precise tuning. I also like the aesthetic of the slim shape.

As you can see I've also made a few sets of pegs from Corian which is a composite material used for kitchen countertops. I also make nut and saddles from the matching materiel. The blue material is a different brand and has a lot more stone in the matrix and is sonically superior to the yellow which I like because it looks vary similar to the aged ivory seen in historical stringed instruments.

There is a thread here on the Foro where Anders talks a little about his peg dimensions. I'm thinking the thread is not about pegs as it just came up.

It seems the long peg was so as the hole wore out the peg could be moved deeper to compensate. Doesn't seem to be an issue today and I harden both my holes and pegs with CA although any glue would do the job.

I feel taking the time to make a peg scraper is important. Mine is nothing fancy. I block a dense wood, mine is maple I think, drill a pilot hole, ream with tapered reamer, then I cut a sector out, clamp on a blade. Some use a plane blade for the scraper. If you google around some there are photos. I do use depth gage end of my calipers to keep track of how deep my blade is and make precise adjustments.

If you just made the tapered hole in a block then just made a narrow slit wide enough to slip a strip of sandpaper it would work well enough I suppose. Just feed about 4mm of the sandpaper into the hole?

I've only built a few guitars and only one with mechanical tuners but I find he pegs superior in every way except vary fine tuning of the g string which just takes a little patience to master.

I did look at a few romantic guitar photos and most had pegs about 3-4cm shorter then yours. Best you look around and decide yourself. Be sure to fit them and leave them in the holes working them a few times a day before drilling the string hole.

And to answer your original question: there is no standard as it seems everyone does it a little different but most start with a Viola peg.


HR

_____________________________

I prefer my flamenco guitar spicy,
doesn't have to be fast,
should have some meat on the bones,
can be raw or well done,
as long as it doesn't sound like it's turning green on an elevator floor.

www.instagram.com/threeriversguitars
  REPORT THIS POST AS INAPPROPRIATE |  Date Mar. 23 2020 17:50:40
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