Yeah, that's what I meant. Thanks. I guess if the solder joints are super-thin, there isn't much resistance. But still, it defies intuition. One of the othe

Yeah, that's what I meant. Thanks. I guess if the solder joints are super-thin, there isn't much resistance. But still, it defies intuition. One of the other weird things the MIT group working on SPARC has been experimenting with that sounds like it totally wouldn't work but apparently it does is that they don't bother to insulate between the Rebco tape windings. The superconductor is just a thin layer on top of stainless steel, and the stainless steel is a sufficiently mediocre conductor that the vast bulk of the power takes the long way around following the superconductive layer rather than taking a shortcut through the stainless steel. Apparently the insulator is less durable than the tape itself, so not having to rely on it makes for a more durable device.