Sharpening router bitsI was routing some tracks for a marble game experiment and was getting messy cuts and some burning. I figured, the router bit is probably getting too dull.
I also tried a diamond stone one time, but that was slow and tedious.
A reader, Andrew Scott, had suggested using a Dremel tool with a diamond wheel to sharpen carbide saw blades. Dremel tool diamond wheels are relatively cheap. I tried it, and it seemed to work. The diamond wheel was just fine enough for sharpening.
I first sharpened just the flat part of the cutter, and it cut much better after that.
Later, I accidentally routed into a screw in my jig, so I sharpened again, this time sharpening the outside edge as well. Although for round-over bits and other bits with inside curves, a wheel really wouldn't work that well.
You can see some lines along the grooves in the track pieces at right. Those are from pre-routing a square channel to make less work for the ball nose bit, but I routed some of those too deep.
More sharpening articles:
with an angle grinder
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