Homebrew PCBs

On 04/03/11 18:40, jmelson2 wrote:
>> What kind of resolution can you obtain with your plotter?  What dot size do
>> you get with the 670nm laser and 13mm FL lens?
> The machine runs at 1000 x 1000 DPI.  I defocus slightly so the raster lines blend in to a solid black.

Is there any chance of you posting some more info about the optics block?

I've been playing around with an RGB laser set (red diode, green DPSS, 
BluRay/HD-DVD playback diode) and I'm curious how you got the spot size 
down. The best I've managed is about 0.5mm, which is nowhere near small 
enough to get any reasonable amount of resolution (about 50DPI by my 
reckoning)...

Thanks,
-- 
Phil.
ygroups@...
http://www.philpem.me.uk/