Homebrew PCBs

On Fri, 30 Jul 2004 15:55:51 -0000, mikezcnc <eemikez@...> wrote:

> I found an interesting discussion on cleaning with IPA and acetone:
>
> http://www.eng-tips.com/gviewthread.cfm/pid/31/qid/85540
>
> The last post says that: "IPA will still leave a residue" and that is
> what I had in mind. How much of that film affects out TT methods is
> another story but the fact is that it leaves film ie 'smears'.
> Like I said, I clean only with the abrasive pad (was it 3M?) and
> detergent.
>
> Is there something stronger than acetone to remove laminated toner?
> This is because the laminator embeds the toner like an enamel.
>
> Mike
>
>

As far as i know there is nothing to remove the toner completely from 
epoxy.
The acetone makes things worse as it solves the epoxy.
only solution i know: don't get the toner where it doesn't belong in first 
place.
(e.g. never misalign component legend).

As for the "IPA leaves residue",
it sounds right, but strangely i get holes in the transfer with acetone
while it is perfect with IPA.
I must try again with 100% same procedure.

ST