May be coming around to flat bearings

[codinghorror]

Could be that only the pure concave is a bad fit in this case though, there’s also the “flat in the middle, but curved edges” type which is really more common and a bit more of a hybrid. I had to look up the name, CT or “center trac”.

History of / differences between different concave bearings?

[image] OK so there are a variety of concave bearing shapes: obviously, pure smooth concave, the “O” of bearing shapes if you will concave but with a center channel indent for the string angled down to the middle, the “V” of bearing shapes if you will the most common type: flat in the center, but the sides angle up, the “H” of bearing shapes if you will. I’d say 80% of the “concave” bearings I encounter are this type the least common type, a combination of V and H, angled steps i…