Homebrew PCBs

the paper towel trick is to ensure a gentle heat transfer and to avoid the risk
of squeezing the traces.
you don't have to 'rub' the paper off, you must 'peel' it off. the rubbing is
with a brush to remove the rest of coating from between traces and in holes
(will prevent etching!). just leave it enough time in the water and lift the
borders slightly to let the water slip in (under) and do its work...
5 minutes may not be enough, 10 to 12 is more likely if you have thick
waterproof paper!
the epson photo paper (not extra glossy) usually swims off after some 4-5
minutes... ah, and drop the 'hot' board into the water, don't touch it, use
whatever you have by hand to push it!



--- Lez <lez.briddon@...> wrote:

> Emm, well I polished board, placed paper on it, had it on a phone
> book, didnt have a paper towel on top but it never stuck to iron etc,
> I held iron on a good minute, after a minute I could not see it
> getting any hotter, when cold enough to touch I slipped it into the
> water for aboout 5 minutes, then started rubbing.
> 
> The paper seems to be bonded together very well and took about 30
> minutes to rub off, my thumbs still sore.
> 
> In fact the back of the paper seems to be like plastic, but does not
> melt etc so cant be.
> 
> I really think its just a bad choice of paper for TT.
>  
> Lez


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