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Homebrew_PCBs@yahoogroups.com, "Fast Eddie" <epinnell@...> wrote:
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> The process I am using is a little involved but I'm getting great results. Following someone else's recommendation this list, I use a product called CitraSolv as a primer. CitraSolv is an organic cleaner made from citrus (d-Limonene) that dissolves the toner just like acetone does. I use a piece of 600 grit wet-or-dry sandpaper and wet sand a the copper a little bit to brighten up the copper layer and remove any surface imperfections, then dry the board with a microfiber cloth and then smear a thin layer of CitraSolv on it. It will evaporate within a few minutes leaving a dry but very slightly oily surface. I print out the traces on magazine paper (which will tend to transfer the ink from the page) or glossy inkjet photo paper and tape it to the copper clad board with the blue delicate surface painter's tape and run it through a laminator a couple of times to stick it down to the board. I then pop the board directly into a toaster oven ∗with the paper still on it) at about 375F for 2 or 3 minutes to melt the toner and heat the board all over, then pass it through the laminator a couple more times before it has time to cool. I then put it in a sink of cold water with a little dishwashing detergent to soak the paper off the board. I get great results! The transfer is very nearly 100% from the paper to the board and the toner adheres very, very well...you can't scrape it off with your fingernail.
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Nice write up! Thanks for sharing that...