Great DiY hot-wire polystyrene foam cutter - Un outil à couper le polystyrène simple et efficace... Super. (Voir aussi Hot-wire_foam_cutter sur en.wikipedia.org/wiki/Hot-wire_foam_cutter )
I've never thought of this... I've got quite a few old hard drives kicking around.
A look inside the Effigear gearbox
Homemade Off-Road Vehicles | DIY Electric Car Forums > EV Conversions and Builds > Non Road Going ...
homestead dome foundation - Google Search