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Potential Bahtinov cutter?
I purchased a 5W diode laser for my home brew CNC router and made a tiny cutting head for it. Interesting exercise designing such a cutting head after 20 years of designing cutting heads for kilowatt class lasers.
If I can cut 1mm thick plastic with it at fast enough speed, I should be able to make large Bahtinov masks up to 300mm diameter.
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