If you want them to look real nice, whether punching out glass or ali,
measure each instrument. I measured my instrument collection first,
and that 3-1/8" and such-such screw spacing standard should be
prefaced with "approximately." I just roughed them out and finished
to fit with a rather worn out by now Dremel.
Regards,
Fred F.
Richard Holder wrote:
>
> I am about to do my panel.
>
> I understand that the main 6 instruments are best served by a hole 3.16
> inches, just larger than 3 1/8.
>
> Spruce have a 3 1/8 hole cutter which I'm sure will do the job.
>
> Everything in jolly old England is metric and hole cutters seem to come only
> in 79mm (too small) and 83mm (too large).
>
> Can someone who has done this give me some guidance ?
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