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Subject: Registering Artwork to Drilled Holes

From: "Earl T. Hackett, Jr." <hacketet@...>
Date: 2004-11-26

I'll probably get both the diamond saw and the shear.

So here's the next subject for discussion.

I'll be building a small quantity of 3" x 5" boards. I've eliminated all traces between pads and arranged all the holes on a 0.1" grid so it is easy to use a piece of perf board as a drill guide. I'm planning to align the toner artwork with the holes using a light box, tape it to the board, and heat the package in a vacuum bag.

Has anyone else tried this or other method to align artwork with predrilled boards?

Eyeball registration using transparent diazo artwork was a common method in the PC industry 20 years ago.
----- Original Message -----
From: Dave Mucha
To: Homebrew_PCBs@yahoogroups.com
Sent: Thursday, November 25, 2004 10:33 PM
Subject: [Homebrew_PCBs] Re: PCB Shear



--- In Homebrew_PCBs@yahoogroups.com, "Earl T. Hackett, Jr."
<hacketet@c...> wrote:
> Oh dear.
>
> I thought this was going to be an easy decision.


Read the weight on the 30" brake.

This is a monster and garage kept.

I had to dissasemble mine to get it into the basement.

Luckily, I have wheels for it as well as an anchor to secure it when
using the shear.

I have cut 0.08" aluminum, but it pushes the unit to the limits. I
expect to break something if I keep doing that. Even the steel at
the rated thickness is an effort to shear.

Dave








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