chuckjaxfl
Well-Known Member
I finally got the little back project box in from Hong Kong so I made another attempt at etching this PWM board.
I printed the circuit out on a page from the Northern Brewer catalog:
Then I ironed it to just-cleaned piece of copper clad PCB. I first ironed the PCB itself, with a sheet of clean printer paper under the iron to keep its surface clean. Once the PCB is good and hot, I laid the toner side of the catalog page right against the copper, with the clean piece of paper on top of that, then iron that onto the PCB.
EDIT TO ADD: I trimmed the paper to line it up with the corner of the board.
The toner fused to the copper very well. It stuck well enough to hold its own weight:
I printed the circuit out on a page from the Northern Brewer catalog:
Then I ironed it to just-cleaned piece of copper clad PCB. I first ironed the PCB itself, with a sheet of clean printer paper under the iron to keep its surface clean. Once the PCB is good and hot, I laid the toner side of the catalog page right against the copper, with the clean piece of paper on top of that, then iron that onto the PCB.
EDIT TO ADD: I trimmed the paper to line it up with the corner of the board.
The toner fused to the copper very well. It stuck well enough to hold its own weight: