I saw this once years ago, but can't find it now. It's a drill bit that drills a conical hole whose taper matches the cone left by a pencil sharpener.

The idea is that you can repair stripped screw holes by reaming them out with this drill bit, and then plugging them with a dowel sharpened with a pencil sharpener.

This seems like a really elegant way to repair a stripped screw hole.

  • 5
    What's the advantage over drilling a standard hole and using a standard dowel? – fixer1234 Nov 12 '17 at 23:04
  • It just seemed a neater solution. Plus, I've repaired a number of doors where there was too little wood left over after drilling for a dowel. It seems to me that the least material you remove, the better. – Edward Falk Nov 15 '17 at 22:47
  • I do not think it is "neater". The least material you remove means less material providing a secure connection, it would not be as strong as a hole filled with dowel. – Alaska Man May 6 at 19:34

You may have seen a taper reamer, there are a few different tapers. They are made to cut steel so wood is easy.

They would need a 1/16 to 1/8 pilot hole as they do not cut in the center. I have a few from when I worked in a bit factory. I expect they are very expensive to buy.

However, I would drill a regular hole and use a dowel.

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Amazon and other retailers carry drill bits with points shaped for drilling into acrylic and other plastics, minimizing the possibility of cracking and grabbing.

The angle may not be quite the same as a pencil point, however. The images I've found are varied, although my set of bits have a severe taper.

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