Homebrew PCBs

Richard,
  There are a few types of Lacquer thinner available with different
solvents in them. Which brand did you use?. I have a board coming up so
might try your method.
Thanks
Kim


On Sat, Dec 10, 2011 at 10:39 AM, Richard <rdheiliger@...> wrote:

> **
>
>
> I accidentally ran across something that appears to help toner transfer.
> Ran out of alcohol that I use to clean the board before laminating. Tried
> lacquer thinner, and got great results. I have been able to reduce my
> laminator temperature from 150 *C to 115 *C. and get perfect transfers. And
> for the first time able to do .008 width traces, without them falling off.
>
> I use a random orbital sander with 400 grit paper to polish off the
> corrosion.
> Do a first clean with alcohol, to remove the dust left from sanding.
> Then put a very liberal amount of lacquer thinner on the board, it looks
> very wet.
> Let the lacquer thinner dry, there is a haze left on the board from the
> thinner.
> Then do two passes thru my laminator at ~115 *C.
> Soak paper off, and etch. When the paper is only heated to 115 *C it soaks
> off much easier.
> The toner is a bit softer and needs a little gentler rub when cleaning the
> paper, but I can still use a plastic scrubby if I don't press too hard.
>
> Would be interested in finding out if others might get similar results,
> and if any one knows what material may be left behind after the lacquer
> thinner evaporates, it must have some kind of adhesive quality. What ever
> it is does not slow the etch time. Lacquer thinner takes the toner off the
> etched board very quickly too.
>
> RD
>
>  
>


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