When a forstner bit gets dull the process of sharpeningit is much like the way you would sharpen a chisel. The process of sharpening a hole saw is quite tedious. When hole saws get dull you either have to change it out with a new one or sharpen it. The forstner bit on the other hand can drill deeper holes. The hole saw will only drill as deep as the height of the bit will allow. Hole saws also can’t drill as deep as a forstner bit either. When done the hole will be more precise and much smoother than what you’ll get with a hole saw. It may take a little more time due to the slow speed drilling. They tend to burn and dull out.įorsnter bits on the other hand do a great job of cutting holes through soft and hardwoods. They don’t work all that great if a hole needs to be bored through hardwood. Hole saws are great for drilling holes through thin material in a hurry. Spade bits are fine if drilling through two by fours and floor joists for wiring and plumbing. The design of the bit with its smooth sides keeps this from happening. The point of a spade bit has more of a chance to walk on you than a forstner bit does. Then removing the rest of the wood from the mortise with a mortise chisel becomes much easier. The way that this works is when cutting mortises, you overlap your holes to remove most of the material. An example of where to use this type of bit is with mortise and tenon joinery. The forstner bit is designed to be used at slower speeds.ĭrill presses also guarantee straight ninety degree holes or any other angled hole that you may need. ![]() It also has a speed control which is needed when using these types of drill bits. The drill press has a depth stop to keep your bit from going deeper than desired. Sure a spade bit can drill a hole but the tear out could keep the dowels from fitting into the holes snug.įorstner bits work very well with drill presses for a few reasons. If your wood project calls for a lot of dowels the forstner bit will be more precise not only in depth but diameter. The bit also creates a nice smooth bottom for things such as dowels. The forstner bit is designed to drill holes that have smooth walls. ![]() Before we understand why a forstner bit should be used over a spade bit, we first need to know what it does.
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