Nichrome wire has a resistance of about 1 – 2 ohms per foot for a 0.6 – 0.4mm wire, so that piece there may easily draw 10 amps out of the battery and not all cells are designed for that.

A couple of old DVD ROM drives and a compact photo printer is fairly standard fare at the thrift store, but what do you do with them? Hack them up to make a CNC foam cutter of course! [Jonah] start… ...