The stock Y pulley brackets Solidoodle shipped out are barely strong enough to perform their job as they are flimsy and with low infill. These Overkill Brackets are printed 90-100% infill in ABS. Simply remove your old bracket, screw the Overkill into place (tightly), then put your pulley and belts back in place and you are done worrying about your brackets for years to come. These have been confirmed to work for Solidoodle 2/3/4 units.
Overkill Y brackets are sold by the pair (left and right).
Screw, belt, and pulley are not included.