so i made this, i have some comments
first the bad, i think the tolerances on the though holes are to tight, it hinders the rotation. and also i dont need it as my rolls are just the right size for it.
and now the good, the holes for the bearings are just perfect, both holes and pin on the frame.
excellent tolerances there.
i ran out of green so made a green and black mix :)
dont know PLA
green and black