Etching printed text on to copper or brass
I want to use print that is white text on black fill done on a laser printer. Do you know what kind of paper I should print the text on? I've read that the text should be printed on glossy photo paper. Do you have a recommendation on the paper?
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As to the etching...just about anything that can be copied from your computer can be transferred onto transfer paper for etching. The style of etching you're wanting to do sounds like intaglio etching - where the entire surface is covered with resist like your black ink and the design lines are left unprotected or scratched away and eaten away by the etching process, as opposed to relief etching - where the resist is applied along the design lines and these lines remain raised after etching.
There are different toner-transfer products available on the market today that use a laser printer to transfer your design to the paper. A household iron is used to transfer or adhere the paper/design to the metal and the glue of the transfer paper acts as a resist to the mordant/acid. I have never tried this method of applying a resist to copper. Most of the patterns I etch are drawn on by hand using a Sharpie marker as the resist or stamped on using the red Staz-on ink as resist.
I don't have a laser printer and I've heard that ink jet printers don't have the hot ink application of the lasers for getting a good pattern transfer when using the transfer paper method. I believe that you can go to a local office supply or printing service company to have the transfers done for you on a laser printer. Office supply companies sell the blue transfer paper as well.