carborundumgrindingpastegrit
A crystal radio "carborundum" (synthetic silicon carbide) Carborundum grit is applied in a paste to the surface of an aluminium plate. When the paste is dry, ... Grinding and Lapping Compound ( Carborundum Paste / Valve Compound ) Code. Grade. Grit# Appliions. 614201: Mocro Fine. 3,000: Precision lapping .