I was missing a handle on my old Craftsman table saw and found it annoying to turn the knob without it. So I modeled a new one using Tinkercad to replace it.
The model uses a 50mm long 3/8" bolt and nut because that's what I had on hand and threaded well into the plastic knob. If using anything shorter you'd have to adapt the design for the hole to go deeper.
End cap is a pressure fit and popped in well for me by pressing it down on a table.
I printed both at the same time with the handle narrow side down and did a filament change to have the black/red transition.
The author marked this model as their own original creation.