Question for a machinist . . .

[Dick Hosmer]

The outside and inside diameter of the wagon wheel rim are virtually the same, where a very small part with a smaller hole in the middle the OD and ID will vary quite a bit.

That's what I thought, hence the question. Actually, the two little parts do not have to be solidified into one to exert the requisite lateral pressure on the block to bind it. That will probably be that last thing I attempt anyhow. Getting the latch housing spot on, so that the bayonet functions properly will be the tricky part. Several interrelated dimensions need to be exactly right for the whole thing to work, and I have no mill, special cutters, or fitting jigs - it's all going to be file-and-try, file-and-try, etc. . . But, it will be FUN!