Hole Saws

Using the right speed, or RPM, will extend the life of your hole saw and give the perfect cut. Excessive speed builds heat and heat destroys cutting tools and when we cut too fast we lose control and accuracy of our cutting operation.

How often do you need to cut a hole far bigger than the largest drill in your tool box? When that happens, your easiest option is to grab your drill and a hole saw.

The carbide tipped hole saws shown here are only intended for cutting wood and fiber cement products. HardiPlank®, or any fiber cement product, is challenging to cut because it’s very soft and abrasive. A bimetal hole saw, often used to cut through wood and steel, will not last when used to cut through any fiber cement product. For example, if we use an Exchange-A-Blade Razor Back M42 bimetal hole saw, which will cut 160 holes through 3/16” steel, it would be ruined after one or two cuts into HardiPlank® or fiber cement board.

The life and effectiveness of a diamond hole saw varies greatly based on the material being cut, the amount of lubrication used, the tools that are used and the technique of the operator. In order to maximize the life of the hole saw, these important notes should always be followed:

Diamond hole saws are designed to drill holes in glass, ceramics, porcelain, ceramic and porcelain tile, limestone, slate, marble, granite, stone, and fiberglass. The cutting speed and life of a diamond hole saw are affected by the hardness and abrasiveness of the material plus the drill speed, pressure and lubrication.