The mold must produce an imperfection free sample of uniform specified thickness.
The die must cut a specimen for testing that will be the specified shape within dimensional tolerances (including thickness) as indicated for the test in question.
Dies can be supplied with mallet handle for fast, easy hand stamping of test specimens using a maul, or for use in clicker presses. Special press adaptors can be produced upon request.
ASTM D-395 Compression Set Molds
ASTM D395 Mold and Constant Deflection Fixture