@montyhayter mostly, though, I'm just not used to thinking about stuff in 3D so I end up forgetting that when I'm going to attach a plate to a thing, I have to consider how thick the plate is too. Or that nuts are bigger when you measure them from point-to-point instead of edge-to-edge. Oops. Or that if the hole for the nut is big enough, but too small to fit my fingers or a tool in there, I can't very well tighten it, can I? Stuff like that. 😛