Prismatic Drills should only be used in glass drilling machines such as the CRL2, SDM4, and 41, or in a securely held electric drill. We do not recommend you use them with hand brace drills. Be sure to keep the drill cool using CRL Cat. No. PGT1 Pure Gum Turpentine or another coolant, such as CRL DTC80 during drilling.
NOTE: Always wear the proper safety gear, including gloves and eye protection, when drilling glass. Work should be performed on a flat, horizontal surface. A Ground Fault Circuit Interrupter, such as CRL Cat. No. GF1, must be used when using any type of electric tool in conjunction with water or coolant. Failure to follow any of these precautions can result in operator injury.