[Boatanchors] pot metal ammeter box

[rbethman]

The most likely answer would be to either pick up a hole saw from the 
local whatever hardware Store/Tool Department of Improvement Store/or 
the cheapest - Harbor Freight.

Harbor Freight may indeed be the cheap seats, but that would be the best 
bet other than finding someone with a drill press and a fly-cutter.

If you insist doing another harder method, drill a whole bunch of holes 
along but INSIDE the circumference, then file to fit.  (This I have done 
for a 3" meter - I'll NEVER do it again!)

Bob N0DGN

On 4/26/2010 4:19 PM, Dick KF4NS wrote:
> 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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