Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

making boards today, working very well with high-temp silicone now.

But there is a problem, the red silicone does not allow light to pass so i
have a hard time aligning 2 sides, any ideas?
I do not think i have ever seen transparent high-temp silicone?
I could punch two holes or something, but it doesn't appear a practical
solution.
Can't show you pictures of the boards as i am not free to show them.

The process i found most working:
Spread enough silicone to get a even, glossy layer, not paper coming
through. easy to do with sqeegee, does not matter if it is slightly more
somewhere so no spacers required.
Dry until cured, used it after about an hour today with good results.
DO NOT leave lying around for days, the dust will come and settle on the
silicone. stack and cover when cured.

After fusing let cool to make sure toner is hard and peel off.

using thin layer (paper coming through) will not allow cold peel without
rippig toner off, and hot peel is problematic as although all toner comes
off it disturbs the toner layer and you get pitting etc. It will be ok for
legend tho.

What about the cooks here using the kitchen parchment paper, any news, any
results?

Now i must go and look after the board, it is about due to be ready.

ST