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Artificial star
I am throwing together an artificial star. I have drilled and aluminium case and fitted a 1000mcd blue LED with a 2.7k dropper and a switch. I have fitted a slightly opaque mask to flatten the response of the led and am working out a way of making a foil 100 micron (.004") round hole.
I tried it last night but found the minimum focus distance is more than 8 meters.
Any ideas on making a 100 micron hole? I was going to enquire about the sizes of acupuncture needles?
cheers
Last edited by DavidU; 17-09-2009 at 01:24 PM.
Reason: spelling as usual
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