The glass unit includes a four step program of 1 Each and every 100g nickel bond, 260g nickel bond, 325g resin bond, and synthetic felt discs. The lapidary program is similar with an extra 600g resin disc provided. M.I.T. theses are shielded by copyright. They could be viewed from this http://jeffreyivkh611.tearosediner.net/7-horrible-mistakes-you-re-making-with-silicon-carbide-schottky-diode