Fret board extension chamfer

Timbuck · Mar 30, 2013

The Guys and Gal's at Martin used to do this job by hand and eye on style O sopranos..which proberbly explains why there are so many odd shaped fretboard ends out there

..I found it difficult to get a consistant shape on my repro's by hand ...So! I made the set up to help me.

The fret board clamps in like this.

Timbuck · Mar 30, 2013

Then the router is set up with a radius cutter.

One pass with the router.

and Bob's yer' Uncle.

The Big Kahuna · Mar 30, 2013

Cheat!!!!!!!!!!

The Big Kahuna · Mar 30, 2013

I know a lot of other people would cheat like this, but Timbuck too ?

Sorry, been waiting months to say that

ksquine · Mar 30, 2013

How does the chamfer radius affect the tone??

trjohnson · Mar 30, 2013

Nice jig. Anyone know how this was done by hand? It looks like the center curves could be easily shaped using the half round side of a rasp. The outer curves could be done by a concave rasp, but it looks like these are fairly new: http://www.liogier-france.fr/concav-hand-cut-rasp?lang=en Not sure Martin would have had them.

Chris_H · Mar 30, 2013

that would be easy work, if lots slower, with a rasp, and maybe a carving knife of one sort or another if you were proficient with it. A spindle sander does a nice job, but repeatable results requires practice.

Timbuck · Mar 30, 2013

Chris_H said:
that would be easy work, if lots slower, with a rasp, and maybe a carving knife of one sort or another if you were proficient with it. A spindle sander does a nice job, but repeatable results requires practice.

I tried carving with the chisels..and rasping.. and Spindle sander...It ain't easy...and never looked right.

Chris_H · Mar 30, 2013

This was done on a spindle sander. It was prewty quick, easy, and I could repeat it. Still, I see a jig like yours appearing in my shop someday..

Note the quick and dirty fret dressing, I just wanted something to play, oh, and that it is enlarged maybe 500%

rudy · Mar 30, 2013

Seems like it would be pretty easy to mount the board on an angled and profiled jig to run against a 1" diameter robo-sander drum to get accurate and repeatable results.

Timbuck · Mar 30, 2013

Chris_H said:
This was done on a spindle sander. It was prewty quick, easy, and I could repeat it. Still, I see a jig like yours appearing in my shop someday..

Note the quick and dirty fret dressing, I just wanted something to play, oh, and that it is enlarged maybe 500%

It's nice!.....But! The pointy bit ain't sharp enough for me

. And don't worry about the nasty bits ...all close up pic's are
like that , it just brings us down to earth

Chris_H · Mar 30, 2013

fair enough..

Fret board extension chamfer

Timbuck

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