Outer ring - who uses and what are your findings

@invictus005 wrote

@lewm SME is not just a center clamp/weight. It shapes the record to the platter. You should know better.

Reflex clamps are designed to couple a flat record to the platter.  In some instance, reflex clamps can tame slight warps but the results will be inconsistent due the fact that warps do not present the same on both sides.  IME, reflex clamps cannot solve larger warps, for those those you need a periphery ring weight.


  

@invictus, if you are referring to the SME Type 20 collet clamp, it does not flatten poorly warped records as proven numerous times by my friend who owns a SME 20 with said clamp. BTW, bowed shaped records are merely a small sub set of warped records.