CFS has an interesting design for that, too. MIT demonstrated joints in REBCO tape that don't introduce significant resistance. By putting these joints in the c

CFS has an interesting design for that, too. MIT demonstrated joints in REBCO tape that don't introduce significant resistance. By putting these joints in the coils, CFS has a design that will let them open up the reactor and replace the inner wall annually. The inner wall will be 3D-printed, and immersed in a pool of molten salt that functions as coolant and breeding blanket.