I am starting to get frustrated with this. I am trying to make my first little part and trying to convert to STL and make sure there are no issues, since my first few uploads have been kicked back. I have followed the directions in the tutorials about using meshalb ad netfabb, and I am still getting all kinds of errors. I did manage to successfully upload something to my account, but it was only 33% of the original part. i exported from sketchup the model as a WRL file, than used meshlab to convert to STL, than open with netfabb to do repairs. can someone explain to me what netfabb means by invalid orientation? I start with many holes, a few shells and some invalid orientations, than i do the repairs, end up with more shells, no holes and still a ton of invalid orientation issues. the repair also pulled a lot off my original model as well. it seems to be looking worse the more it is repaired. I originally made the model using sketchup, if that has anything to do with it. any advice or tips would be greatly appreciated. also included my original sketchup file if anyone can take a look and see if there is anything obvious.