lots could be done to dial it in but protopasta iron fill pla is a super cool material to play with

So if I put a 10x40mm neodymium magnet on my fridge it'll hang horizontally from that, but it won't stick to fridge by itself

Remarkably, no - I did crank flow to 110 because I was worried but went fine through regular .4 (hardened steel) nozzle

I also have a roll of their cf htpla that I haven't touched because I'm scared of clogging with cf but will be giving it a shot soon

Looks a bit more like salt+vinegar (in water to control the speed)