Itchy – how the nuts work

I was going to make myself a tap out of steel and try to make an aluminium nut from it – after discussion I decided to make that a delrin nut. After further discussion, I used polymorph. And by further discussion, Roger came into the room ten minutes after I’d explained the problem to him, and said, “The other thing you could do…” and then I did what he suggested.

NB: do not use a drill to move the screw back and forth in polymorph to clean it out. It gets hot, and polymorph melts below 100 Celsius.

Fortunately it’s not hard to warm it up again and recast it. It’s all trapped inside a bit of inch square extrusion.