BOSCH MKM 6003 Blade Hub

thingiverse

Hi, my grinder blade hub thread was pulled out as I grinded sugar. Thought how to fix it because the spare blade is very expensive (20 bucks) and the problem would be the same (weak hub thead). So I made two versions of the hub. First step: Take a thin knive and peel out the blade (wear thick gloves for safety). Start on the side where the "flaps" show away and cut completetly around until it falls apart. Then carefully cut between the blade arm and the plastic and try to lift it off. when its done print one of the hub you like. Second step: print the hub upside down (CROSS UPWARDS). BOSCH_only_hole_no_thread.stl : This one has a 4.5mm hole for drilling a thread in it with a thread drill. Drill only 3-4 turns then take a M5 screw to drill the rest. it is possible that the hub cannot be screwed completely to the bottom of the maschine. then fill it with hard stuff e.g. rice, corn, beans an power it on so that the motor thread drills in by every impact on the blade. Bosch_Thread_Nut_M5x8x7mm.stl : Here you need a M5x8x7 or a M5x7x7 thread nut. Take a soldering iron on low temperature (approx 180-200 C) and press the nut in. Be careful because the plastic is thin will heat up completely and gets soft. Last step: press the blade onto the hub. That´s everything. You don´t have to secure it (when pressing on feels tight) if not try to inrcrease the size of the object in cura to 101% or so). good luck and good coffee!!