Search:

My preference would be a note, but I think a GD&T runout call-out would be the place to start.

GD&T is great if everybody in the chain fully understands it. Well, that leaves me out! IMO, concentricity is a call-out that should almost never be used. It doesn't mean what everybody thinks it...

IMO, once you use a face mill with the right inserts and the mill trammed correctly, you'll never consider anything else. Boring heads are for boring.

The Harig looks great and should work great after a tune-up. I question the wisdom of a wide wheel on these machines and you'll certainly have to balance it. IMO, changing bearings on a Boyer-Schultz...

You might get lucky here, but maybe try a post over at photo.net

Lacking more info, I'll assume a can of Mother's Mag Wheel Polish could give the required finish.

A while back I wanted to do a custom pulley for one of the less popular proprietary belt profiles. Seemed like an easy thing. Ended up being a f---ing rabbit hole and I eventually gave up and just...

That sounds like it might be a diamond turning operation.

Hone is great and you can sometimes stack thin parts and do them all at once to get around the PITA of thin parts. You should have no trouble at all honing L/D ratios of 2:1 or more. At their very...

You're going to have to add weight opposite the handle. I'd put a shaft through the hole and rest it on rails, just like balancing a grinding wheel. I don't like two handle wheels, but adding an...

At work we always have chucks mounted on 1/2" stub arbors, maybe 7/8" long. Easy to get in and out.

The High Speed Hammer Co. was here in Rochester. I remember driving by the place and every time I saw the sign I'd think, "Man, it sure must be loud in there." I think they might still exist with a...

I've done something similar using a cast iron lap and diamond rolled into the lap. This is very different than lapping with a slurry. It's old school but it works. Also see American Lap Company

Oil in the lungs is really bad. Almost like vaping! Buy the right stuff and quit messing around.

An oldie but goodie- have a look at the 592 and 733 video amps.

Designers that design too close to "doable" usually end up with expensive designs and high failure rates. Start with what's typical for a given process, then add a safety factor. If the answer isn't...

Backlash is of little concern. I'd get a wedge type AXA QC toolpost, Phase II plus a bunch of tool holders from CDCO. Don't extend the tooling and try to keep the cutting edge within the envelope of...

Thanks- I've always found the Hardinge metric threading setup a poorly documented mystery. This helps a lot.

NIST has a bunch of stuff related to uncertainty including some kind of on-line calculator. Google will turn it up if you do a site specific search. An example is...

The crack might or might not have anything to do with the fall and could have been there since the beginning.

Thanks. Surprised not more replies. I have some import punches that have what appears to be a huge included angle, yet they work fairly well. I usually have no internal taper, just an angle on the OD.

Just a note on vacuum chucks- you can suck as hard as you want, but the most force you'll ever get is 14.7 pounds per square inch, the result of atmospheric pressure. A 50 HP vacuum pump can't make...

I often find myself making hole punches for things like gaskets and paper templates. Are there any generally accepted angles for sharpening that both cut well and hold up well?

edit- I'm talking...

IMO, 90% of that stuff is too big to be of any use in a smaller setting. The Hardinge could be nice for you, and it looks like it has a conventional cross slide and compound at the edge of the photo....

Any time I need a change gear for my Logan, it gets made out of Delrin. They work great, last near to forever and are much nicer to the gear cutter.

268385