Bearing Reamer?

[asid61]

Originally Posted by teslalab2

As a machinist, I would recommend an offset boring tool. You could put it in the drill press and then bore any sized hole you would like.

I used to use an offset boring head, but after a couple years I got (extremely) lazy, especially because switching to the boring head required me to drop the knee of the mill 3" or so. Now we use positive bearing retention everywhere and 1.125" holes.
My method is to drill with a 1/2" drill first (largest one we have), then go in with a 3/4" then 1" endmill. After that I finish up the hole with a 1.125" endmill. This gets some tight slip fits and a very round hole.
My dream is to own a 1.124" reamer, but the $200 cost for a custom one doesn't suit me too well. Given that we use a manual mill anyway, it doesn't hurt to use the 1.125" endmill we already own.

[Owen Busler]

Im not sure if this is the exact model we have but this is what my team uses. We spent some time last offsetting setting it to exactly 1.124 and we never change it. The CNC router gets us to 1.12 ish and we manually clean it up with this:

http://www.mscdirect.com/product/details/02239093

[protoserge]

Originally Posted by asid61

My dream is to own a 1.124" reamer, but the $200 cost for a custom one doesn't suit me too well. Given that we use a manual mill anyway, it doesn't hurt to use the 1.125" endmill we already own.

I got my 1.124" reamer for $52 shipped on eBay. Brand new. Keep an eye out for them!

[DonRotolo]

That bit is NOT a reamer, and don't count on the tolerance to be down to 0.001".

As others have said: make the hole several thousandths undersize and use a hand reamer to make it half a thousandth (or so) undersize.

EXPERIMENT in the off season!