Toolbox

Turning a hollow spiral candlestick

We’ve talked internally before about the fact that many of us are mesmerized by tutorial videos, even when we know nothing about the subject being demonstrated. I don’t know from woodworking, but I had a great time watching this five-part series on turning a hollow spiral candlestick on a router mill. Okay, so I might […]

Homemade blow-molding gun

Homemade blow-molding gun

Blow-molding (Wikipedia) is an thermoplastic forming process in which a hot polymer pre-form is injected with gas to press it against the inside of a hollow mold. It’s how most plastic bottles are made. Designer George Fereday got annoyed that the primarily-industrial process was so inaccessible and decided to build his own DIY version, which extrudes pre-melted polymorph plastic through a custom die attached to a normal caulking gun to create the hollow pre-form. There’s more detail over at Core77.