Grant Erwin writes:

knowone wrote:

Sprinkle iron powder on one piece, put them together and tape them tightly
and put them in the microwave for a bit.

Is this a gag or would this really work? Why?

One method of welding plastic is to embed a piece of wire in the joint and
then heat the wire from the outside with an induction coil (not that I've
ever done this, but I've read about it). I don't know if a microwave would
work or not.