Colin,
Don't give up on your hole saw just yet. You may be able add another layer
against the piece of aluminum you wish to enlarge or even a piece of thin
plywood and let that be your new guide for the saw to engage with and allow you
to drill out your new hole. Like a sandwich of the two pieces.
Have used this trick a few times over the years for such a problem.
73,Kathy w2nk
------------------------------
Message: 6
Date: Sun, 10 Oct 2021 19:25:53 +0000
From: Colin Lamb <k7fm@teleport.com>
Cc: Amplifier Reflector <Amps@contesting.com>
Subject: Re: [Amps] Hole punches
Message-ID: <a31cef2c-ce6a-f2af-657f-81a412a522fa@teleport.com>
Content-Type: text/plain; charset=utf-8
I recently had a transmitter that had holes cut for some capacitors.? I needed
larger holes.? But a hole saw cannot easily cut a larger hole, so I needed a
hole punch.? I found some Temco hole punches on eBay for $59.95, which included
free shipping.? The are 1/2", 3/4", 1" and 1.25".? These are electrical conduit
sizes.? And they come with all the hardware.? They are very well built and are
the sizes used for electric boxes.? They have more sizes, for more money.? They
normally are pretty expensive.
?
Colin Lamb? K7FM?
?
?
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End of Amps Digest, Vol 226, Issue 4
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