[dagw]

here are other superconductors that need to be cooled to just 150K

Don't those very high temperature super conductors only work under under extremely high pressure?

Also most higher temperature super conductors are very tricky to produce in larger quantities.

[tigershark]

Honestly I don’t know about the 150K one, but if I remember correctly the cuprates didn’t need high pressures.

[londons_explore]

The ceramic ones aren't flexible, which is tricky when you're using it like a wire and need to wrap it around stuff...

Also, they can't be joined, so you have to do significant redesigns of the machine to be able to get the whole conductor in in one piece.

[tigershark]

It makes sense, thanks, I didn’t think about flexibility.