Lawn Mower Handle Knob for Craftsman/Husqvarna

These knobs tighten the foldable mower handles when they are in the straight position. The ears kept getting broken off these knobs on my lawn mower. 

I tried to make it resemble the original part as best I could, except I changed the long curve on the underside of the knob to a 45 degree line. This allows the knob to be printed without supports if your printer can handle 45 degree overhangs.

Print with the small end down without supports if your printer can do 45 degree overhangs. Push a 5/16"-18 nut into the top of the knob. A 5/16" washer between the knob and the handle will help spread out the stress from the curved handle.

Nov. 3. 2022: Updated files to increase size of the hex hole by 1 mm. Also made the width of the hole a User Parameter in the Fusion 360 design.