I needed a replacement knob/handle for the 3 point hitch control on a tractor I recently acquired. One of the handles was missing. It doesn't even show a part number for the one I needed. Just the whole handle assembly.
The part number for the other knob/handle was shown as "83956901 is a replacement part for the obsolete part(s) E0NNL892AA".
None of the parts places showed a picture and I didn't feel like taking a blind chance.
So paper, pen, caliper and phone in hand it took just a couple minutes to get the measurements. Then about 5 minutes to design it in Inventor. 3 hours to print and less than $1 in material and I have a new handle/knob.
Gotta love 3d printing...
It's already on its side so no supports are needed.
I used TPU so it will feel comfortable in my hand. If it wears out too soon I can always reprint and increase the infill.