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

Another consideration in this is the board preperation. If I get a
printer and find out what ink he used, I will certainly start with
using the exact process he described.

However, this may also apply and help with ink adhesion. When I was
having trouble with toner transfer on one particular brand of PCB
materail, I pre-etched it in ferric chloride. This allowed the toner
to bond perfectly. No matter how much polishing I did with steel
wools, scotch brights, 1000 grit sandpapers, and cleaning with
acetones would help - only a pre-etch worked.

What I remember from that experience is that the material came out of
the ferric chloride with a nice dull finish - perhaps good enough for
the ink to adhere and dry properly. Certainly worth a test.