About this 3D model

Work in progress: I'm trying to find the correct width of the thread to be usable This object was made in Tinkercad. https://www.tinkercad.com/things/l0wZ1J4XPLj to be filled with 50C. euro needs adjustment for correct size on each printer: check correct size printing TEST object, try to set the ball bearing and the coins then use "scale object", X and Y axes (not Z) on your slicer program, print and check again