people report some success smoothing PLA prints from #3D-printing with ethyl acetate, but nophead says it won’t dissolve them
#video on #bootstrapping acetylene #materials via calcium carbide from seashells and driftwood in an arc furnace made by winding 50 turns of 8-gauge wire through the hole of a large toroidal transformer from a 110VAC→240VAC converter. The wire turned out to be too thin, so he rewound it with 25 turns of 6-gauge. He kept melting his improvised furnace made from firebrick, so he switched to using a stainless-steel cup and a “skull crucible”. #scouting
#video #toread on #manufacturing a kilogram of potassium #materials
#video by #Ivan-Miranda on his #mechanical marble clock, this time adding a 20-stop geneva wheel
#video #toread by #Hacksmith on real-life power armor
#video #toread by #StuffMadeHere on new FormLabs SLA #3D-printing machine
#video by #Ziroth on Helix Earth Technologies’s #air-conditioning with undisclosed liquid #desiccants to reduce #energy demand