[sdiy] DIY PCBs

[Brockr0 at cs.com]

In a message dated 7/25/01 CHoaglin at aol.com writes:


> Now I remember somebody mentioning quite some time ago some site that had 
> plans for home made PCB etching gear that was pretty high grade...anybody 
> recall what site that might have been (I have all the plastic tanks, flow 
> switches, heating elements, liquid/temperature sensors, etc, etc I need to 
> build a lot of this stuff just lying around, thanks to a lot of scrounging 
> in 
> the bin behind a local medical dye laser manufacturer.) 
> 
> 

Perhaps http://www.thinktink.com/pcbfram.htm
DIY pcbs including plated through holes and solder plating.


Might as well ask a couple of questions since I'm posting...

For those who have had success with printing to transparencies, what brands 
of  transparencies, printer, and toner are you using? 
I have tried many kinds of film and toner in a Raven laser printer and have 
never had any success. The toner is seldom opaque and if it is, the film is 
sufficiently distorted from the heat of the fuser that it can no longer be 
forced into flat contact with the board. 

I have also tried using translucent vellum but have never achieved adequate 
resist exposure, even with very long exposure times. Is there a trick to this?

For people milling boards, what kind of tool life are you achieving? Milling 
seems like an attractive option to etching but small end mills are expensive 
and re-pointing them seems impossible in a home shop.

Brock
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