…And also breaks instantly as soon as it’s put under load. The process is for sure very interesting, but a simple casting like this is not the correct method for making something like a wrench. It’d be useful for plenty of other parts, though.
Well, it will work… until it suddenly doesn’t.
TL;DR: normal sand casting, using a microwave to heat up the metal inside an insulated silicon carbide crucible.
It’s not, like, using the microwave to sinter a metal-powder 3D print or anything special like that.
I didn’t know silicon carbide heated up in the microwave. I learned something from the article.
I started watching the video on Youtube, but almost immediately switched to an older video from the same guy that went into more detail on the metal-melting part.
People often make rubies in microwaves. Microwave crucibles can get exceptionally hot.




