About this 3D model

I designed this solder holder in just a few minutes on http://3dtin.com You definitely need a heated build platform to print it. Even with my heated platform, it still had a little warping in the corners. Suggestions for improvement are welcome! It takes about 45 minutes to print. Consider this object to be a proof of concept for printing unedited STL files exported directly from 3dTin. It's nice to have a 3d editor so easy to use that a 5 year old can enjoy building with it.