STL Check is a modifier you can place over the top of your lowpoly for instance, to check if you have left open edges, multiple edges, double faces. It also highlights where these areas are and I use it as a last step before unwrapping and then before export.
This is my biggest problem with high poly modeling but your words are very good to hear and make me want to step down from thinking too big and work from the ground up so to speak. My models do nothing BUT pinch hah. It seems there aren't massive resources available to learn this kinda stuff. I can't wait until Gears 2…
Pior: When I work up a section of a concrete material in zbrush, export, polycrunch and am ready to process in max, I select the concrete element and CLEAR ALL smoothing groups. Zbrush automatically assigns a sort of smoothing group and the tendency is to assign 1 smoothing group to it by hand to smooth out some of the…