Etched heatbed construction
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Robert Kuhlmann, July 2013.
Here is my version of how to produce your own hetbead with the toner transfer method:
Clean the board
Sand the copper
Iron the layout
Use paper towels for good details
Remove the paper
This one didn't have enough ironing
Remove paper with latex gloves
This one looks good
Paper removed
Very fine details
Pens for repairing breaches
This one's ready for etching
Etched and cleaned from the toner
Tips:
- I use 1200 or 1000 ppmm sandpaper to roughen the copper. This allows fine details.
- The laser printer is a cheap Samsung ML-2525W (69€).
- Watering of the ironed layout lasts just a few seconds, before the paper can be rubbed off with latex gloves on.
- The iron should be as hot as possible. The longer you iron the board, the less breaches in the layout will occur when removing the paper.
- Never iron directly on the paper. Details will be smeared an lines will not get sharp. Use one or two layer of paper towel as a buffer to the iron.
- Use pressure but try to avoid to move the paper with the molten toner. It's a question of training to become perfect.
- Laminating instead of ironing seems more comfortable, but doesn't give the best quality possible.
