I wondered if there was a way to grow the surface of a part that might be quite complex, a bit like scaling but not the same. i mean grow the part like it had a 0.25mm thick layer of plating equally all over?

What I actually want to do is create a pocket into which my part fits, but I want it to easily fit - with a clearance. But the part shape is quite complex.

But I cant find a function that does this because even a slightly complex shape makes the move face command fall over.