CA in a hurry

[Farrell]

> you're left with a hole lined with Alox or garnet particles of
> whatever size (80 grit? 100, 150?) free to move and function as a
> lapping compound.

I don't think so. Grinding metal generally requires a fair bit of
back-and-forth motion. The amount of pin turning that would occur with a
reasonably skilled tuner will barely even score the surface. Really, it is
not an issue. Sandpaper shimming is quite a reasonable approach. I generally
use 120 grit paper-backed aluminum oxide.

Terry Farrell


> At 1:42 PM -0600 11/16/04, Barbara Richmond wrote:
> >So, I was wondering if I removed those few spinning pins and
> >carefully applied the CA, would I get more holding power?  How long
> >should I wait before re-inserting the pins?
>
> You didn't mention whether the tuning pins had been driven already.
> That's my first remedy. If you've got an 1/8" below the string where
> it leaves the coil and the plate, make that 0" (plus a smidge) and
> the other end of the tuning pin will be 1/8" into a part of the
> tuning pin hole which has never done any work before. It requires
> blocking up under the pinblock, a carpenter's hammer and tuning pin
> setting tool ( a small handle stuck into a head with a spring-loaded
> punch to hold onto the pins so they don't jump too badly when hit),
> plus a significant rough tuning.
>
> I've never used sandpaper to shim with, figuring that after a while,
> under the pressure the paper backing will disintegrate and then
> you're left with a hole lined with Alox or garnet particles of
> whatever size (80 grit? 100, 150?) free to move and function as a
> lapping compound. Gross Encounters of the Loose Kind.
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