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

Just to toss an idea out.

Has anyone tried to use some kind of vacuum bag setup applied to toner
transfer, dry etch resist or solder mask application.

For the case of toner transfer, I would put the pcb with the transfer
sheet attached into a turkey baster bag. Suck out all the air with a
vacuum pump of some kind and then heat the whole assembly. For heat
you could use an iron, heat gun or maybe pop it into the toaster :) .

From what I have read, the turkey baster bags are good up to 350F.

Some pluses of this might be reduction of pin holes because the air is
removed. Also flexing of the backing might help to constrain the toner
and keep it from spreading.

From what I have read, vacuum lamination has also been used to
laminate multilayer pcb.