Practically free pivot collar

[bisonbladesharpening]

I've been wanting to learn to use a pivot collar.  I thought of this.
I have these hard foam practice golf balls.  Very dense foam and water resistant.
I disected one in half.  Drilled hole just smaller than the diameter of the jig shaft.
put golf ball above the knob, flat side against the knob.   2 pivot collars for 75 cents.
Now I just need to learn to use them.
Best wishes,
Tim

[Ken S]

Clever idea, Tim.
Keep us posted.
Ken