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It's fast and easy - you can use acetate instead of the pricey kapton.
To use acetate requires 2 coats of paint on each side of the film.
The first coat is high temperature ceramic. This primes the surface to absorb the laser energy and is not thermoplastic, so it stays put.
The second coat is any thermoplastic black paint. This melts from the heat and stifles combustion to keep the burn lines thin.
For this material, a burn setting of 50kDPI seems about right when done on an aluminum plate that's been painted with BBQ BLACK ceramic paint.
It marks the paint but the aluminum sucks the heat right away.
mounted in the print frame with a pcb ready to get pasted:
To use acetate requires 2 coats of paint on each side of the film.
The first coat is high temperature ceramic. This primes the surface to absorb the laser energy and is not thermoplastic, so it stays put.
The second coat is any thermoplastic black paint. This melts from the heat and stifles combustion to keep the burn lines thin.
For this material, a burn setting of 50kDPI seems about right when done on an aluminum plate that's been painted with BBQ BLACK ceramic paint.
It marks the paint but the aluminum sucks the heat right away.
mounted in the print frame with a pcb ready to get pasted:
