If you have taken a class with me, you’ve probably used a nifty chamfering bit spun by a drill. The bit cuts a nice chamfer on the ends of round tenons. This makes it easy (or easier) to pull the tenons into their mortises.
That bit is an inexpensive thing I bought in the plumbing supply section years ago. It is designed to chamfer the ends of metal pipes after you cut them.
Here is where things get weird.
Those bits are still readily available, but they do not cut. I have compared my working example to the bockety ones, and it looks like the manufacturer stopped grinding the essential cutting edge.
I have bought chamfer bits from several other sources. Same problem. I have tried the ones with carbide teeth – they just chew up the wood.
I have a solution that works, but it is more expensive than the $7 versions.
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