Homebrew PCBs

On Sat, 26 Mar 2005 22:40:06 -0000, javaguy11111 <javaguy11111@...>  
wrote:

>
> For me the biggest problem is all the toner particles that were
> scattered around. I would not have been able to etch a board in that
> condition.
> Still I think the technique shows alot of promise. I probably will not
> do anymore experiments today, but things I would try different is to
> use a scotch tape spacer to try to get the coating thinner and also
> try differnent spreading techniques to try to get the coating more
> even. I also wonder if there is any kind of solvent to thin out the
> thick silicone. That may allow for a more even coating.


I have not observed any of that toner, dunno where it comes from.

The acetic acid is a valid point, maybe neutral curing silicone would be  
better?
I do not expect problems at the fuser (teflon coat) but i do not know  
about the drum i admit.

You can get thinner silicone, for moulding, but it is not properly sticky  
i fear. Thinning is very hard but not impossible i think i remember.

I didn't use any spacer, just spread it out very thin with the slightly  
rounded edge of a floppy disc.


ST