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Tried the "cold toner transfer" process today using what I had
at home, acetone and 80-proof vodka (40% alcohol by volume) for my solvent.
Printed the PCB artwork on standard, white, office paper using my HP Laserjet. Using the 8:3 mix and didn't get any transfer to the copper.
So I dabbed the solvent onto the other toner patterns on the paper
and let it set half an hour before I tried rubbing it off again. Still wouldn't lift off the paper. D'OH! I forgot to print it onto something slippery. So I printed four patterns on Oracal 651 vinyl for another go at it.
Did everything according to the video, but the part where the paper and plastic are supposed to peel off the board, leaving the toner still sticking, failed miserably.
So I added another capful of acetone to the bottle, put the cap back on and shook it up, and tried again. No results.
I repeated the above two sentences about three more times. Still the toner did not detach from the Oracal. So I let put a few drops of solvent onto a different piece of Oracal with a toner pattern printed on it, and let it sit about half an hour.
Then I could rub the toner off with my thumb, but it took a good bit of pressure to lift the toner from the plastic.
This was my first try to use the "heatless" toner transfer. I think
I'll buy some 100% ethanol (grain alcohol) and try again later in the
week, unless somebody has a better idea.