On 15/04/2021 20:02, SH wrote:
I use a pair of mole grips to hold the disc platter by the edge and
light my MAPP blowtorch...

I apply the blue flame to platter and then finally manage to melt the
platter and watch molten droplets of metal drop off into the sinkful of
water...

Rinse and repeat 9 more times....

1 empty bottle of MAPP gas later, the metal granules are now in the WEEE
bin!

You didn't have to go that far.

https://en.wikipedia.org/wiki/Curie_temperature

Andy