> mycroft wrote:
>
> <snip about wetting agents>
>
> As I'm writing this, the thought crossed my
> mind that this may be applicable to Toner
> Transfer also. The toner is in a liquid state
> and must properly wet out the copper. I'll
> probably give a try on my next run of pcbs.
ST said something about failed tests not
completly cleaned from the copper affecting the
inkjet tests.
I found something similar with toner transfer.
(way way back when I strayed from the path
of the righteous for a few years and like a
foolish child forsaked the photo process)
I always used to have a high percentage of
first tries not come out too well. But the
second go after cleaning off the toner with
acetone it transfered close to 100% everytime.
So I just started smearing toner and acteone
on the blank copper. Helped heaps.
NB - my toner transfer was done with faber
castel brand OHT (later 3m GC3300). People
usig inkjet paper for TT may not find that
step useful.