Optical grade surfacing tool

Optical grade surfacing tool, including:

• a rigid support (60) having a transverse end surface (25a);
• an elastically compressible interface (12) attached to the rigid support (60), including a central part (12a) which is in line with said end surface (25a) of the rigid support (60) and a peripheral part (12b) that is transversely beyond said end surface (25a) of the rigid support (60), having a first transverse end surface (26), a second transverse end surface (27) and a lateral surface (28) extending from the periphery of the first end surface (26) to the periphery of the second end surface (27), said first end surface (26) being pressed against and covering said end surface (25a) of the rigid support (60);
• and a flexible pad (13) adapted to be pressed against a surface (71) to be worked, attached to the interface (12) on the opposite side to the rigid support (60), including a central part (13a) that is in line with said end surface (25a) of the rigid support and a peripheral part (13b) that is transversely beyond said end surface (25a) of the rigid support;
• characterized in that said pad (13) is carried by an elastically stretchy membrane (14), said membrane including:
• a central plateau (15) having a first transverse end surface (22) to which said pad (13) is stuck and a second transverse end surface (23) pressed against and covering said second transverse end surface (27) of said interface (12);
• and
• a plurality of straps (18) each projecting radially from the periphery of said plateau (15) and each having a distal part interengaged with an attachment means (38;
• 55) situated in line with the first end surface (26) of the interface (12), each of said straps (18) passing around said lateral surface (28) of the interface (12) and then extending as far as said attachment means, each strap (18) being taut.