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I had this problem after the first serious use of a drill I bought (judging by the resistance, I believe I was drilling into concrete). I tried using the drill in reverse and various other suggestions I saw on the internet but had no luck. What I ended up resorting to was to buy a "Draper 43863 2-Piece Soft-Grip Strap Wrench Set" from Amazon (I think there ...


5

Thank you to everyone for your insight! I made a quick stop at the Lowes down the street and picked up a few inexpensive options you all mentioned. The one that absolutely stood out for my purposes was the drill rasp. As soon as I began I knew it was the one. I went back over 4 holes, each taking about 1-2 minutes to effectively widen and shape. I was ...


4

Three methods I can think of. Enlarge by friction Your idea of wrapping the bit in sandpaper isn't even bad. The only "right" way to do this is a different bit, and that's not even worht it. You just probably used the wrong sandpaper. Try some 80 grit and make sure to go in a back and forth pattern, roughly every half inch you plunge. There also exists ...


2

I am not saying that this way is the best nor is it recommended on high-end finishes but I simply would maneuver the current bit around the hole until it was bigger. You will get to 1/16" quickly with this method. To make it more effective just keep the bit perpendicular to the board at all times and don't put a ton of force on the edges. I will also put ...


10

The general method I use to make a bigger hole is to take a scrap piece of plywood (1/4" works great) or pegboard or similar that is a bit bigger than the hole, clamp/screw/hold it in place, then use the correct size hole saw to drill through that and into the board. This gives enough of a start to keep the hole saw in place to drill the rest of the way ...


13

You might use a half-round rasp or file.


4

I think your best bet is to use a sanding process to open up the hole. It may take a while but should get you there eventually. When I had a similar problem I took a piece of 1/2 inch diameter birch dowel rod (about nine inches long) and cut a slot across its end. Then inserted a folded over piece of sand paper to make a two sided flap sander. Chucked into ...



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