Shark Controller replacement knob for electric wheelchair

thingiverse

I possess an electric wheelchair outfitted with a Shark controller, which boasts a joystick sporting a rubber knob attached to a metal stub. These knobs prove fleeting and I've replaced them multiple times in the past. This time around, I decided to create my own. I deliberately fashioned the hole slightly smaller than necessary so as to achieve a snug fit, then carefully drilled it out to ensure an optimal tightness.