We plan to be using the materials sooner or later, but for the time being it is an overshoot probably.

FasterCap format is the same of FastCap, but this is pretty specific to those solvers I'm afraid. Also, it is based on pure surface panels geometrical descriptions (akin to what the Mesh workbench does). As I said, these solvers are based on BEM methods, not FEM, so only boundary descriptions are necessary, not volumes - this dramatically reduces the number N of input elements, at the cost of a dense matrix to be inverted, that is tackled with by some fast O(N) or O(NlogN) algorithm.

Best Regards,

Enrico