A GRINDING AND/OR POLISHING MACHINE AND A SPECIMEN HOLDER

The present invention relates to a grinding and/or polishing machine (1) with a rotatable specimen holder (20) and a rotatable disc (8) for supporting a preparation surface (6), the specimen holder (20) comprising a housing (25) having a housing face (40) oriented towards the rotatable disc (8) and at least sixty-four pins (30) having each a portion (36) projecting from the housing face (40), the pins (30) being individually movable into the housing (25) against the action of a resilient member (60) arranged in the housing (25).