Greenlee punches come in many sizes and are readily available on fleabay. If
its a one time project you can resell and lose nothing.
Masking tape prevents marring the metal. Machinists bluing is a perfect way
to make your lines and other marks.
Carl
KM1H
----- Original Message -----
From: "Bill, W6WRT" <dezrat1242@yahoo.com>
To: <amps@contesting.com>
Sent: Saturday, January 30, 2010 6:50 AM
Subject: Re: [Amps] Building an Amp & Metal Working is an Art.
> ORIGINAL MESSAGE:
>
> On Sat, 30 Jan 2010 02:42:48 -0500, Roger <sub1@rogerhalstead.com>
> wrote:
>
>>The holes
>>for the tubes and sockets must not look like they were done with a hole
>>saw. This can be done with either a fly cutter, or punch press.
>
> REPLY:
>
> I agree that a hole saw does not do very pretty holes compared to
> other methods, but if done carefully, I think they can be adequate.
> The secrets to making good holes wit a hole saw are: 1. Go slow. You
> need to CUT your way through the aluminum, not BURN your way through.
> 2. Use a sharp hole saw. When it gets dull, toss it. 3. Spend some
> time cleaning up the inevitable burr.
>
> And try not to be too obsessive about it. Few if any of the holes will
> ever be seen when the amp is in actual use. You don't need "perfect",
> you need "good enough".
>
> 73, Bill W6WRT
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|