> Any practical idea/results/cost here?
> Cristian
I have used a cheap infra-red, I can use to melt most any thin black
material, lines so thin you need a 10x lens to see them. With a cnc, I
can rasotize an image with it. A co-2 laser is LOTS more powerful and
really expensive, not something someone can buy to toy around with
(unless you have $300 - $1,200 ebay prices to throw around).
The IR laser diodes are strong enough to melt, smolder thin black
materials. I can etch a logo in black plastic within a square 1/4 inch!
I just cant figure out what to use to melt or solidify as a resist onto
a copper board. Spray paint is a new idea, if I can manage to find a
paint that is thin enough that will vaporize with the diode I am
using. And also thought about using printer toner (just the black
powder) - to somehow coat the entire board, the IR diode could also
melt and fuse the toner right to the copper, but that stuff is very
messy!