Nice to hear someone was done work on it too. sadly i have to disagree on
almost all points.
On Mon, 16 May 2005 14:02:02 -0500, <milwiron@...> wrote:
> Since Stefan first posted his idea I've played around with this on and
> off... mostly off, but here's what works well for me.
> Your mileage may vary.
> 1. Use high temp automotive gasket silicone (red).
I agree on this one
> 2. Use two layers of masking tape at the outside edges of the paper to
> hold the squeegee .008" off the paper.
> I'm using a 2" bar of acrylic as a squeegee. This of course gives you a
> coating of silicone 8 thousandths of an inch thick. Thinner than this and
> the toner can get in to the paper. Thicker and the transfered lines get
> mushy and distorted.
I disagree on this one. I use a steel squeegee and wipe it off as thin as
i can, no spacers.
I found it works better than a thick layer. I hold the squeegee almost
vertical and apply a lot of force, basically scrape off as much as you
can. the fibers shine through but the toner does _not_ adhere to them.
When you believe there is nothing left on the squeegee, you are wrong, it
is still enough for 2 or 3 sheets.
> 3. Let it cure -completely- for 4 to 7 days. Longer doesn't hurt.
Don't see the need, even a thick layer (mm) is cured in half an hour, i
have used a coated paper after 30 minutes with no adverse effects.
> 4. I'm printing with a HP2100 laser printer, factory cartridges only.
> Off brands of toner don't always work.
> The first time I use a piece of silicone paper I run the whole sheet,
> tape and all through the printer.
> 5. Lightly sand and clean PCB stock with lacquer thinner, not acetone.
> I've gotten very poor results using acetone, I don't know why. Trim the
> printed silicone paper to fit.
I always use acetone, and have very good results. i do not like the
possible adverse effects to health of laquer thinner.
> 6. Run it 5 to 6 times through GBC Laminator.
Run one time through old copier fuser converted to slow speed with chicken
grill motor.
> 7. Let cool and peel.
peel when still hot. (thicker coating can be peeled cold, but thin coating
is better peeled hot)
> The results are 99.99% perfect, there's very little touch up.
the results are 100% perfect, if you have done nothing wrong (e.g. bad
cleaning, pits in silicone, creases..)
> To reuse the silicone paper, clean it with lacquer thinner and stick the
> leading edge to a carrier piece of paper with a glue stick.
I just print the sheet again. why do you stick it to another paper?
I will make another post with my process, step by step. Easier to follow
than my comments here.
It is good we have come to different results, so people can try both.
ST