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(Click any of these links to view that picture)
- Print the layout on normal paper.
- Cut the LaserPCB to size, slightly larger than the actual layout.
- Apply a piece of double-sided tape to the back of the LaserPCB (shiny side).
- Stick the LaserPCB over the layout on the paper from Step 1. Ensure that the leading edge of the LaserPCB (the edge going into the laser printer first) is taped. The trailing edge does not need to be.
- Print the layout once more, this time feeding the paper/LaserPCB combination through the printer manually.
- Remove the LaserPCB from the paper, then etch it. The tape on the back can be seen through the LaserPCB here.
- Scrub the toner off the LaserPCB using a Scotchbrite pad.
- Closeup of the finished product.
- Another closeup.
Notes
- The numbers to the right of the lines refer to the line widths, in inches (0.001 = 1 mil).
- In this test, the 1 mil line is severely damaged, but the rest are intact.
- The etch bath used in this sample consisted of 1 part muriatic acid and 2 parts hydrogen peroxide, in a pyrex dish, slightly heated on a warming plate, and manually rocked back and forth to provide agitation for about 3 minutes.
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