CRL HBT34 3/4" HBT Belgian Thread Electro-Formed Diamond Drill

CRL HBT34 3/4" HBT Belgian Thread Electro-Formed Diamond Drill

C.R. Laurence HBT34 3/4" HBT Series Belgian Thread Electro-Formed Diamond Drill is engineered for fast cutting and high production runs, making it an essential tool for professionals in the glass drilling industry. With a thin-walled design featuring a 1/2" depth of a multi-layer diamond bonding matrix, this drill excels in delivering superior results under exacting conditions. This model is versatile with two mounting styles available-straight shank or Belgian type-ensuring compatibility with a variety of U.S. and European glass drilling machines. The extended shank length of 1-3/8" and diameter of 3/8" provide a secure grip, enhancing stability during operation. Due to the fragile nature of the drill, it is crucial to operate it with care, exclusively on flat surfaces, and in a precision machine. Freehand drilling is not recommended, and the use of a stabilization base like the GDB1 & GDB2 is essential when using hand drills. Regular sharpening or "dressing" with a dressing stone will maximize cutting efficiency. Always prioritize safety by wearing gloves and eye protection while ensuring the use of a Ground Fault Circuit Interrupter when working with electric tools and water. The C.R. Laurence HBT34 is a reliable choice for achieving high-quality glass drilling results.

3/4" HBT Series Belgian Thread Electro-Formed Diamond Drill

• For Fast Cutting, High Production Runs
• Extended Work Life
• Two Mounting Styles to Choose from Straight Shank or Belgian Type

These CRL Electro-Formed Diamond Drills are thin-walled, with a 1/2" (12.7 mm) deep multi-layer of diamonds and bonding matrix designed for high speed, high production drilling. These drills give outstanding results when exacting conditions are met. The CRL DCD Series features an extra long 1-3/8" x 3/8" (35 x 9.5 mm) diameter shank for a positive grip on the drill. The CRL HBT Series features Belgian style mounting threads, also known as 1/2" (12.7 mm, gas thread), which are popular choices for U.S. and European glass drilling machines.


Due to the fragile nature of these types of drills, they should be used in a precision machine, never allowing too much pressure to be applied. It is important to handle these types of diamond drills with care and use on flat surfaces only. Sharpening or "dressing" of these drills before each use will substantially increase their cutting capabilities. A dressing stone is a recommended necessity when working with an Electro-Formed Diamond Drill.

IMPORTANT NOTE: CRL DCD and HBT Series Diamond Drills have a very thin wall which makes them EXTREMELY FRAGILE. They are intended for the drilling of flat (plate) glass ONLY, in a true running, production type drilling press.

NEVER perform any type of freehand drilling. The use of a hand drill requieres a stabilization base such as a our GDB1 & GDB2 Glass Drilling Bases. Extreme care and caution should be used as the use of these drill in any other manner other than as specified may damage the bit and void warranty.

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 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.