Counterboring Gearless Tuners into the Headstock of Guitar #85
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- เผยแพร่เมื่อ 2 ก.พ. 2022
- In this episode of DIY Guitar Making, I am installing some Steinberger Gearless Tuners. These tuners are a whole different conception of how a tuner should work with the string descending into the headstock instead of wrapping around the post. I am also using a set of drill press counterbores to hand-"ream" out counterbores for the tuners to rest in.
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Hi Eric, as an amateur luthier, I've benefited greatly from your videos and it shows on my guitars. I ordered the counterbore tool set and used it last night. I drilled out the tuner holes with a 3/8" forstner bit but found that the pilot guide was too tight so I opened up the hole with a 3 degree reamer and it worked just fine. Next time I may go one step up from 3/8. I was a little concerned that the 5/8" bore would be a bit too tight for the tuner, but I think the little bit of slop from turning the tool by hand gave it just the right amount of room to fit nicely. You mentioned that a T handle might make this easier - absolutely right - about 1/2 way done, I spent about 10 minutes to make a handle with a mortise to fit the tool and hammered it on. This made a big difference and was well worth it. Keep up the good work!
Hi, just wanted to say that you videos are excellent very well explained and educational. I am building a new guitar with Steinberger tuners, I am wondering if you have a video that shows how you locate and position these steinberger tuners to get a straight string pull. I would greatly appreciate your advice.
Excellent! Love the tuners and the counter bore. I often use various power tool bits by hand if I want complete control. Things can go very wrong very quickly with power tools! Great video as usual. Thanks Eric! :o) xx
Great 👍 am not luthier but love to watch your vid....
Have a question. I know 3/8 of an inch is very close to 10mm, but can you remember exactly which size the tuner peg holes are? Also: when you get up to turn the humidifier off and come back ...... the look on your face is PRICELESS! Keep up the good work.
Eric, I'm installing my first set of Steinbergers on a fender style headstock. I've done a lot of machining in my years as an artist/craftsman and the term you are looking for to describe the part of the tuner for which you are countersinking the "shoulder."
I cannot say that I find the installation of these tuners to be without problems. For example I slotted for the key post (pin) because the tolerance between the body diameter and the post is not practical, in my experience, for wood. In addition, the manufacturer suggests suggests a 1/16 inch hole (.0625) for the pin which is about .075 inch. I assume they expect the pin to expand the hole and provide a secure fit with the pressure of installation. With harder woods or torrified hard maple in this case, compression, forcing the procedure, is iffy at best.
I think angling the pilot for the pin is a good compromise. Since this is my first experience with the Steinbergers, I chose not to be as aggressive when hammering for location and setting of the pin. I see that my concern may have not been justified.
Counterboring for the shoulder is an excellent innovation. Your hand use of the counterboring tool was really a good touch. Like others have commented, I frequently opt for hand control for processes like chamfering. Did you have any trouble with chipping out the edge of the hole because of the relatively few teeth on the tool? I assume your tool is "bottom cutting" for a flat cut like other counterbores.?
Thanks for the thoughtful and educational video.
Jim
thank you Eric . very interesting would you be so kind and show how to use em ?
Love those tuners, ordered a set last week to try in my next build. Could you add a link to the source of that counterbore bit? Thanks beautiful work.
Adding that style tuner and countersinking seems to increase break angle across the nut. Any tuning problems?
Could you vary the counter-bore depth to try and equalize string break at the nut?
I just found out about these tuners, and was wanting to install some on my Ibanez, but I’m a little wary about drilling holes into the headstock to accommodate for the pin. Would it be possible to just hammer them into place, or would that potentially cause damage to the finish, or lead to the tuning peg coming loose after having string tension on it?
Also, I saw a video where someone did the math of how much a string moves per turn on a set of 18:1 geared tuners, and compared it to the Steinberger gearless, and it equaled out to just about the 40:1 ratio they claim.
eric do you sell a seperate online course on guitar finishing
Yes. A Tru Oil finishing course:
www.ericschaeferguitars.com/course/tru-oil-finishing-method-acoustic-guitar/
Interesting, tuner, but… Not sure this type of tuner would work with nylon strings I use on ukuleles. Synthetic string stretch a lot. Interesting!
That’s a beast of a counter bore bit :) but seems to work very nicely. 40:1 is very impressive but I imagine it’ll go out of tune slightly as they all do as it’s probably more down to string stretch, temperature etc etc.