Hole Saw FAQs
Whether you’re into case modding or need to make lockset cutouts in new doors, hole saws are the perfect tools to have on hand for cutting clean, symmetrical, circular holes in everything from wood and metal to drywall and plastic. CableOrganizer.com wants your next hole-cutting project to be as simple and frustration-free as possible, so we’ve put together answers to some of the most frequently asked questions on hole saw use.
What type of drill is best for use with hole saws?
As far as hand drills go, brand isn’t much of an issue, but power is! For clean, consistent cuts, a good rule of thumb is to stick with reasonably powerful drills of at least 14 volts. For cordless drills, professionals often recommend upgrading to 18 volts to ensure that you have enough power.
Why is a hole saw’s pilot bit so important?
The pilot bit is located at the exact center of a hole saw, and protrudes a short distance beyond the saw’s toothed edge. The first part of making a hole saw cut is to drill the pilot bit into the center of what will become the hole. Sinking the pilot bit allows the hole saw to anchor itself to the object being cut, providing the saw with guidance and stability before its cutting teeth even touch down.
How can I use a hole saw to enlarge an existing hole?
This problem can be fixed with two simple items: plywood scraps and a clamp. Just clamp a 1/4" to 1/2"-thick piece of plywood over the existing hole. Mark the new hole’s center point on the plywood, align your saw’s pilot bit with the center-mark, and complete the hole cut as usual. If you’re going to be boring through a door or similar object, attach a second piece of plywood to the back as well: it will prevent splintering when the saw emerges on the opposite side.
How can I prevent my hole saw from becoming clogged with sawdust?
The easiest way to clear excess sawdust is to simply slow down your hole saw and draw it back every so often, which cools the saw and allows cutting-debris to spin off. If your project calls for more drastic dust-removal measures, try the following trick.
After drilling a pilot hole for your cut, use the hole saw to very lightly score the wood’s surface. When the scoring is complete, remove the hole saw and set aside. Next, drill several 1/4" holes along the inner edge of the score line (keeping them within the circle, and spacing them out around the perimeter). Make sure that these holes penetrate completely through the work piece. At this point, you can pick up where you left off with the hole saw… you’ll be able to make a complete hole cut, and all of the sawdust will automatically clear out through the ventilation holes.
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