Re: gEDA-user: alarm clock update

[Robert Fitzsimons <robfitz@xxxxxxxx>]

> What I'm contemplating is switching to photoresist.  You print the
> pattern on transparencies, photoexpose, develop, and etch.  No
> laminating, soaking, etc.  The advantage is that it's easy to line up
> transparencies because you can see through them, so doing double sided
> PCBs (or in this case, etch brass from both sides) is easier.

I've been using the photoetch method for a little while now, I've a
small write up with photos at http://cyclerecorder.org/blog/20070609 .

The results with FeCl3 seem very good to me, though I've never tried the
toner transfer method.  The boards I've used are pre-sensitised but I
must try using applying photoresist myself, and try a test pattern/board
to see how fine I can get the traces..

Robert



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