My Tantillus Extruder mount broke. I had to repair it. I wasn't sure if it broke because the hob bolt came loose or because the motor mount couldn't support the weight of the motor. I decided to design a part that would deal with the latter issue (if that was indeed the issue).This one is sized to be used with the Tantillus having the rubber feet stuck on the bottom of the corners. It fits my Tantillus perfectly but depending on what you have for "feet" it might not fit yours and may need modification.Printed on my Tantillus with PLA using an infill of .25.