[sdiy] PCB Etching

[epeasant at telusplanet.net]

I then placed the
>board in the etching solution for 20 minutes(like instructions said). I
>checked it out and there wasn't even a quarter copper faded yet!

The pcb must be very clean before applying the transfers and the etching solution
*must* be agitated continuously for proper etching. Heating it also improves
etching time.

>   To make a long story short, I let it sit about another 45 minutes and
>jiggled the tank around a little. The copper was finally gone, but my traces

>were horrible!! 

With the RS transfers you need to make sure that they are firmly applied to
eliminate etchant creeping underneath. Always go over the whole pcb and press
them all down firmly just before etching. This works fine for me.

Take care,
Doug

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The Electronic Peasant

www.electronicpeasant.com