NegentropicBoy to Videos@lemmy.ml · 2 years agoFresnel Lens Manufacturingwww.youtube.comexternal-linkmessage-square2fedilinkarrow-up112
arrow-up112external-linkFresnel Lens Manufacturingwww.youtube.comNegentropicBoy to Videos@lemmy.ml · 2 years agomessage-square2fedilink
that vid was actually quite interesting