Acoustic Guitar Construction

Check bearing suppliers. I see there are two in Medford, Neely and Allied. Get your calipers out.

Definitely worth a try. Hadn't even thought of that. Buy something from a human being in a physical store? What will they think of next?
Thanks Carl.

What an ordeal!
Not.
The jig arrived well-packed, tools were provided, tolerances were all spot-on, easy assembly. Smooth and easy.
Tomorrow - I hope - to give it a workout. Way too cold in the shop today.
Kudos to Elmer's tools.

Oh by the way - at Carl's suggestion I went to a bearing shop here in Medford, taking one of my LMII bearings along.
Both the knowledgeable folks there looked at the bearing, frowned mightily in concentration, said tsk-tsk and pulled out a huge catalog.
They found nothing even close, on their shelves or in the huge catalog.
The woman said: that's an OEM part, I think. The man asked: what is it used for? Which started a guitar discussion but did not yield a bearing.
We were getting along pretty well, so I held up the LMII bearing and mentioned that the shipping cost from southern Ca to Medford was over $10.00 for that little, light piece of machinery.
He said: that's not bad; he has upon occasion dropped something that small into an envelope and dropped into a mailbox on the way home after work; but mostly, companies get a better rate by shipping more stuff - they do not pass that on to us however.
Business, just business.
Good grief.
And earth-shaking news: Costco brand coffee that we had been buying for $8.99 a can was $12.99 yesterday.

At risk of repeating someone else, smaller cuts, more passes?

That is my default, Peter. I have a couple of old bodies in the shop and will try the 'one and done' thing like a few of the guys talk about, but until I'm satisfied that I can pull that off repeatedly, I'll do the creep.
If I end up tearing a chunk out of a top with this rig, you will see a glow from southern Oregon when I detonate the small nuclear device I've been working on, using plans that are available on the internet.

That looks cool Dave. You will get good results with this. When my jig is worn, I will go for this one too.
I go with one pass. A bit needs to cut. Then it is cooled by the substantial material taking off. If it just "leans" to the wood and cuts little, it will get hot and for that faster worn. The same counts for drilling bits. All about the right pressure and rotating speed.
Herman