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    Nubm44 focusing lens

    Hello guys, i both nubm44 and tooth it will be gait for my home made laser engraver, but it seams the diode is not focusing. I try to use some kind g2 the focus was around 2mm maybe less, then some cheep axis lens it was bit better, then 3 component now its less then 1mm but it is not round its...


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