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Thank you, that is exactly what I was wondering. Thanks, yes it would be lighter colored, so that suggestion is very helpful. :) Alright, yeah, smaller is not a problem, and I understand that calculations are based on perfect equipment and so I would be very lucky to produce the exact result...

I was wondering what I would need for a basic laser that could be focused to around 100-200 microns? I know that it shouldn't be a problem in theory, but I'm not sure if I would need some kind of specialized focusing lens to focus a laser beam to that precision. I was also wondering if a laser...