THIS FILE IS DIMENSIONED IN INCHES. SET REPETIER OR YOUR CONTROLLER PROGRAM TO RECOGNIZE AND IMPORT FILES IN INCHES. If you're like me and recognize the value of these good quality bins from Harbor Freight, Item 41949, http://www.harborfreight.com/hand-tools/bins-containers/20-piece-poly-bins-and-rails-41949.html you've got a few extra mounting strips laying around. I don't hang all the bins and have a surplus of the mounting strips, so here is a low-cost structurally-sound hook for hanging carded and retail items or bags. ABS 2 vertical shells 20% infill at 1/128" (.2mm) layer height allows them to hold 20lbs. For light loads you could likely get away with making them hollow. Shortly after posting this thing I printed a hollow version: ABS 1/128" layer height 2 vertical shells, 3 bottom layers, 5 top layers 0% infill It easily holds 2 sets of Allen wrenches weighing a pound total with no give, so hollow is a viable option as I hypothesized.