Magnetic 1.5 mL tube rack/stand for IPs, etc.

This was a really cool design but the original files were non-manifold (not watertight) which my slicer could not handle (tried to print them anyway and it was a disaster). So I took the original sketchup file and fixed it so that it's a solid object with no holes. Printed just fine after those adjustments. Sketchup and STL attached here.

I just glued the magnets in with superglue one at a time, inserting one thumb between the previously glued-in magnet and the next one being placed in, to