[Boatanchors] pot metal ammeter box

[J. Forster]

Draw a circle with a compass of the diameter you want. Then drill a set of
small holes, 1/16" to 1/8" just inside the circle. Then use a tiny jig saw
and file to cut it out and smooth it.

Otherwise, get a fly cutter or hole saw at Home Depot or the like.

-John

============



> I am assembling an RF ammeter (Sangamo 0-3A) box using a pot metal
> box. I will place the meter in the lid but fitting it could be a bit
> difficult.
>
> I am looking for advice on cutting the 2.2" hole. I have plenty of
> tools but nothing to cut a hole that big. The base metal is most
> likely aluminum (non-magnetic). I was thinking of cutting an 'X' and
> then maybe use my Dremel tool to cut the circumference. It is very
> difficult to cut a round hole that way though.  If only it were wood
> or plastic, then the job would be easier.
>
> Any ideas?
> Thanks and 73, Dick KF4NS
> St Petersburg, FL 33714 USA
> Keep The Glow!
>
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