[Amps] Making holes for amps

[Roger]

On 9/13/2013 10:29 AM, k7fm wrote:
> Although there is a milling machine in the shop we are building our
> airplane, we had one job where it would not work.  We needed to make
> slots in our wing.  I designed a tool that works nicely for that purpose
> and could also be used for making square holes in aluminum chassis.
>
> I had an old Sears X-Y drill press attachment and made a small fixture
> to hold a Dremel tool which held a 1/8" milling bit.  I then placed this
> on the surface of the area that needed to be slotted and secured it.  We
> ended up with perfect slots.

I just cut wood strips and fasten them down to make window cutouts with 
a router or "zip" tool for the rear window on the Glasair III.

The smaller "zip" tool is much easier to use, but a lot slower.

73

Roger (K8RI)
>
> I think the same thing could be done using a small milling bit attached
> to a router, (if you make an adapter) then make an alignment jig to
> control the direction and end stop of the router. The setup will take
> longer than the cuts.
>
> 73,  Colin  K7FM
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