Little hole in a bigger circle.

[Christos]

I must ask. Any photos?

[DJ’s Timber]

Make this little jig and finish your knobs on the sander.The holes will be in the center of the knobs when you are finished.

Regards
Harold

Harold, unless you're a member and logged on at the router forum where that pic you've put up is hosted, no one will see it.

This is is all I can see

image.jpg

[Mekon]

I must ask. Any photos?

Sure, but I need to go visit them first. Then I'll post pics.

[PaulWG]

In terms of holding the 'wheel' to drill the hole in it with the forstner bit, two pieces of scrap timber with curved inside edges to hold the wheel could be clamped in many ways; G clamps, F clamps, quickgrip type clamps, but easier in a machine vice.

Cut a 'wheel' out of a piece of timber, cut the waste in two as shown, sand the cut faces so that, when put back together, they have a slightly football shaped hole in them small enough to securely clamp a wheel between them.

Attachment 287855

Craig

Craig this is just what I've been looking for to solve a similar 'concentric holesaws' dilemma. Thanks!