I posted on here before about,can,t remember what area,I,ve made 3 R.Ross has 1. I like useing odd stuff to make things. made these from a sulkey hay rake tooth,good steel. short section ,chuck it up in the drill press and filed down a stem. to make it like a tandy knife. went to the vise ang draw filed 8 sides, I despise knurling.ended up with a taper ,from top to bottem.for the yoke I used a section of auto brake line,yoke was a cross section from motorcycle handle bar,then cut that in half.why do you need ball bearings? a fellers fingers can,t work that fast.just a finger and thumb going back and forth.after I finished I cut 3 rings around the top spaced apart,and hammered in some silver wire,cleaned it up and blued it with cold blue.I like the taper and the 8 sides give you a good grip.and it kooks kinda neat too,I think, Edward