A friend just showed me this adapter:


It is for connecting a bit used in a bit brace to a boring machine:



This would allow you to use your entire set of brace bits in your boring machine for when you need a different sized hole for your project.

Here is the offer, if you are interested in having one of these adapters, please make a post into this thread with your name and email address. Or email me privately and I'll start a list of names, and see how many are interested.
I'll begin now to create a measured drawing of this and take it to my machine shop and see how much they would cost to be reproduced.
And I'll make them available to all, once done.

Jim Rogers
email: jrsawmill (at) verizon (dot) net