This is the offensive article, which my heat gun decided to die in the middle of making. I decided to have one last go this morning at getting it working, switched it on, gave it a shake and it came on, so it seems I have nothing worse than a loose wire. Matt has said he'll have a look at it for me later on (which probably means sometime in the next year or two, so I should probably do it myself). I've ordered the new one now anyway so that means I'll have a spare, which is good.
The ATC is made entirely from Friendly Plastic which I've manipulated using a piercing tool, and the face is moulded.