Holes in panel

[Richard Holder <rholder@avnet.co.uk>]

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 ?

Thanks

Richard Holder
Kit 51 moving forward on its build after a 7 year wait (by someone else).
G-OWWW.