Diamond drill bits have come a long way. Thanks to improvements in technology and manufacturing techniques, a good diamond bit can cut easily and cleanly through everything from concrete and stone to glass blocks and panes.

But the bit won’t do the job alone. Proper drilling techniques (such as drilling with the right speed, pressure and lubrication) are essential for high-quality results. Each bit manufacturer has specific recommendations for their different types and sizes of bits, so follow them closely.

Basic Drilling Techniques to Consider

Drill Speed

Drill speed will vary depending on the material being cut and the size of the bit. Generally, Diamond bits should be used at slow speeds, with the speed decreasing as the hardness and abrasiveness of the material increases. Bit size is also a factor since the outer cutting edges of bits turn faster than the center as the diameter increases.

Drill Pressure

The hardness and abrasiveness of materials Diamond drills are designed to cut call for a light touch. Pushing a bit too hard into masonry and glass doesn’t make it cut noticeably quicker, but it does greatly increase friction, causing the bit to overheat. That not only burns up the bit, but it heats up the material being cut, risking fractures and breakage. Diamond bits are carefully designed by experts, so read the instructions and let the drill bit do the work rather than the driller.

Diamond Bit Lubrication

Good lubrication of Diamond bits is crucial. It not only prolongs the bit life by reducing heat buildup, it also protects the material being drilled from scorching, melting, or fracturing.

Water is the best lubricant; oil-based lubricants aren’t recommended for Diamond bits. The amount needed and how it’s delivered will depend on the material and the drill type. Water delivery can range from a simple spray bottle to “wet” drills with water delivery systems to completely immersing the object, depending on the hardness and drill manufacturer specs.

A simple guideline to follow is this: if the drill bit is more than warm to the touch, you need more lubrication. If it becomes hot, several things could be happening: inadequate lubrication, too fast a drill speed or too much pressure applied for the material being drilled.

Use Proper Drill Speed, Pressure and Lubrication to Minimize Damage, Risk and Prolong Bit Life

Improper drill speed, pressure or lubrication will not only give poor results, but can be unsafe and will certainly reduce the bit’s usable life. On the other hand, proper speed, pressure and lubrication will minimize risk of damage and extend drill bit life considerably. If in doubt, start slow with a light touch and plenty of lubrication.

Using the right techniques and tools ensures a professional job and results you’ll be proud to show off. Whatever your concrete cutting, coring, and finishing requirements may be, equipment and tools from Ace Cutting Equipment are your choice for top-quality results. Call us today at 888-283-2597 to find the best tools for the job and speak to one of our professionals.

Have Questions about this Product? Call us at (888) 283-2597 or email us steve@acecutting.com and we will help with any questions you may have.