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Subject: Re: Have you ever had PCB material that simply will not accept a toner transfer?

From: "lcdpublishing" <lcdpublishing@...>
Date: 2005-11-04

Hi ALan,

I tried pre-etching this morning and it may have helped.

After going through 12 sheets of Pulsar paper, I emailed them (Frank)
and he suggested I use a laminator rather than an iron. THe unit he
recommended for .062" thick boards is $129.00 right now - I will wait
till they go on sale.

Anyway, back to my pre-etch. On small test samples this proved to
help a lot. I was testing traces from .005" to .100", even the small
ones were staying put.

However, as soon as I tried on a bigger board, the toner wouldn't
stick again -grrr. The next time I am making boards - hopefully
tomorrow or Sunday, I will try a longer pre-etch to see if that helps
on the bigger boards.

Thanks again for all your help and suggestions!

Chris



> Actually the very best thing is to simply pre-etch the board.
Clean
> it some first, then etch until it turns the rosy pink, then rinse
with
> distilled water. The board surface should then be about as good as
it
> will ever get, so then try the transfer. If it won't work after
that,
> no amount of other board prep is likely to work.
>
> Alan
>