It's an actually indentation. Can't necessarily feel it but you can see it. Does your friend have the Acutus ? The acutus clamp is different than the clamp for all the other tables, but not sure that even matters. I may be tightening too much , but Avid did say that over time the label would be marked by the clamp and to try using a piece of thin paper as a cover .
Avid Acutus Record Clamp leaving marked "ring" on record label
I recently purchased an Avid Acutus SP and the record clamp is marking my record labels with a "ring" from the clamping down to flatten the record to the resin platter. Are there any Acutus owners out there that have had this similar problem and how can it be fixed ? I don't like that the labels are actually being damaged and leaving a ring because of the clamps force directly into the label. Any help or feedback, or experiences would be greatly appreciated. Thanks !!