Q:

I’m making knobs for a tool cabinet, and I want to put a small decorative insert in the center of each one. How do I do that?

L. Clift, Albany, NY

A:

First, turn a short length of ebony or walnut to a thin cylinder. A finished diameter of 1/8 in. to 11/64 in. works for most knobs, but choose a size that’s well proportioned for the knobs you plan.

Chuck a knob in the lathe and put a small dimple in the face with the point of a skew chisel. This will ensure that the hole you drill for the insert will be dead center.

Measure the diameter of the ebony cylinder and select a drill bit that’s a hair smaller. Use a drill chuck in the tailstock of the lathe to hold the bit. Finally, chamfer the cylinder you’ve turned, so it slips easily into the hole in the knob. Glue it in place and cut it slightly proud. Use a small gouge to trim the insert flush as you turn the knob to its final contour.

Photos: David Heim

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