A prism-shaped sapphire blade is fixedly mounted in a mating groove of a holder by forming longitudinally extending opposed slots in the abutting faces of the blade and of the groove. A bonding material that sets up hard adhesively bonds the abutting surfaces and forms a key filling the opposed slots, to lock the blade in the holder.
John Beedle (1956-1958), Mike Mostrom (1966-1970), Frank Steffey (1964-1968), Mike McQuiddy (1971-1975), Mike Anderson (1967-1971), Kim Fudge (1965-1969)