Homebrew PCBs

The transparency is non-absorbent - the silicone will bead up on the 
surface.  Paper will absorb some of the silicone -allow for a thinner, 
smoother, better bond.  Just my thoughts  - -

Norm

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>>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.
>>    
>>
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>I have not observed any of that toner, dunno where it comes from.
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>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.
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>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.
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>I didn't use any spacer, just spread it out very thin with the slightly  
>rounded edge of a floppy disc.
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>ST
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>Be sure to visit the group home and check for new Bookmarks and files:
>http://groups.yahoo.com/group/Homebrew_PCBs 
>Yahoo! Groups Links
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