Sometimes my models have such tiny defects (holes or inverted triangles), or they're so buried inside the model, that I can't see them in Netfabb, although I know they're there due to the damned exclamation mark. Is there a method to make Netfabb zoom to the single defects, or show them in transparency if hidden, or any other method different from using zoom 1000x and scanning manually each single triangle in my model? Additionally: do "multiple shells" in Netfabb mean that the model is not printable? I can't get rid of them! note: I know defects are higlighted in Netfabb.... but mine are not visible being too small.