Holes in panel

[Nigel Charles <72016.3721@compuserve.com>]

Message text written by Richard Holder
>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 ?<

It may be more cost effective to have the holes cut professionally. I cut
out an aluminium sub pane, marked out the position of the instruments and
passed the panel on to Brian Nelson (freelance avionics engineer - ex RD
Aviation). He cut out all the holes (including the fixing holes). All was
perfectly done - total bill 20.

Nigel Charles