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Re: [Amps] Making holes for amps

To: amps@contesting.com
Subject: Re: [Amps] Making holes for amps
From: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Fri, 13 Sep 2013 15:59:30 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
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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