Prints without support. Found tolerances to be a little tight when printed at 300 microns and broke due to low infill, it was also too small for the loose filament I had. Scaled it up to 125% and printed at 200 microns, 30% infill, about 6.5 hrs. print time (main photo) and it was strong, moved freely but tolerances became a little loose and joints didn't lock into place. Still too small for the loose coiled filament I had. Probably best used for smaller filament samples.