I just have to say...WOW! FINALLY!!! After so many attempts with different papers, methods, and whatnots, I finally have something I'm proud to show off. Stephan, you were absolutely right, a printer's fuser works incredibly well. I did some tests on the fuser I am using (from an old HP LaserJet IIIp), and found that a temp of 180 deg C corresponded to around 1.65K of resistance from the internal thermostat. I ran the temp up no higher than that after my initial experience with parts melting. I scrubbed the board with a Scotch Brite pad under running water before hand, and didn't use alcohol or anything else chemical...just a rinse in water to prep. Then, I printed my circuit with some of the cheapest photo paper I could find - it's listed in our group's papers area of the files section - HammerMill Jet Print Photo Multi- Project Photo Paper, Gloss Finish, Medium Weight. Since I didn't have the gearing intact from the printer anymore, I let the fuser heat, then unplugged it, and pushed the board through by hand. (Only about half of it was needed for my circuit design, the other half was a handle). It was actually cool if you grabbed it by the sides. I went VERY slow through the fuser. For my 4 inch long design, I stopped half way through, after about 15 seconds, to re-heat it, then continue on. After 3 back and forth passes (in each direction, making 6 exposures to the heat), I flipped the board and did 3 more, for a total of 12. One roller is hard, while the other is softer rubber. I think it's the rubber side that does most of the transfering, so that was why the flipping. After that, I put the board immediately in cold water and let it soak for around 15 minutes. Success. I put some photos in the photo area. Thanks everybody for all your help. This is great. -Josh Pullman, WA
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FINALLY!! SUCCESS!!!
2004-02-22 by joshdewinter
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