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| Step 3: Rough the 3.5"x2.5"x1/32" double sided copper clad board |
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Copper that sits around tends to oxidize and forms a surface that will not etch well without some roughing. Take some 150 grit sandpaper (available at Home Depot or Walmart) and scrub the board until very shiny. The more you scrub, the better it will work.
Step 4: Attach the 3.5"x2.5"x1/32" double sided copper clad board to the Full Spectrum Engineering Custom CD Holder and Inkjet Tray The best way to attach the CD is through the back with blue painter's masking tape. Simply put a piece over the center hole and push the copper clad board down. Try not to touch the surface with your fingers as oil makes the copper surface not accept ink well. Important: remember not to cover any holes that CD normally wouldn't cover when viewed from on top.
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