Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Volkan,
The results look great! Have a couple of quesitons. Is this from a raster scan using a printer to scan. What sort of beam spot velocity do you think you have?
Would like to have a starting point for the vector draw speed. Did you have to scrub the dry film to remove the unexposed sections?
It looks like the edge definition is nice and sharp.

I haven't got my mill back running yes so I haven't had a chance to try the vector write method yet. I would be interested in what method you used to turn on and off the laser. I modified my current driver with a shunt fet to ground to shunt off the laser current. I don't know what sort of on/off speed I will get yet, would be interested in other ideas for a driver. I finally found some thermal printer paper and I did a couple of tests of my UV laser diode's plastic lense last night and found the spot can be focused quite small. I kept burning through the paper if I kept the beam on too long.

Craig