Rob de Bie Posted March 10, 2022 Share Posted March 10, 2022 Recently I saw this instruction video on how to a printed circuit board using only a laser printer, paper and ferric chloride (FeCl3). No masks / transparancies, no photo-resist, no UV light, very simple: https://www.youtube.com/watch?v=1Y6mNqMU9z8&ab_channel=MrCarlson%27sLab Here's a variation using HCl and H202: https://www.youtube.com/watch?v=u9KWOh5I8Fk&ab_channel=zjokka I think the same method should work for photo-etching scale model parts. Has anyone tried that? Rob Quote Link to post Share on other sites
KursadA Posted March 10, 2022 Share Posted March 10, 2022 Our technicians at work use this method all the time, when we need a small board very quickly to work around a design error on a prototype system or an adapter/converter for a test fixture when we can't even wait for the 2-day quick PCB companies. However, the two-sided PCBs we use have fiber substrate between the two copper layers on each side - I am not sure how this method would work for a simple plate metal. You may have to print a mirror image of your pattern and apply it to the other side of the plate, or perhaps cover the entire back side and etch away everything but the masked area. Quote Link to post Share on other sites
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