we 3d printed a gear bearing !!!
it was print in place and spun smoothly !
wanted to try to design it by self. this was really triggering T_T to try, almost no progress.
hard month. lots of mc nebular storms and galactic collisions maybe :s
it turns its hard to learn how to design an involute gear profile with a 52 degree angle of force (most tools only go up to 30 degrees) when you have been traumatically avoiding using the learning parts of your mind for 13 years.
but maybe it would be nice to take a stab at it more :D