Wow, fixed my ATC!! And the existential consequences thereof...

All fine in theory, but exactly how often do you have ten miles in which to accelerate to top speed??..........real handy when all your coordinated moves are all .00125in or less.......NOT...

Welllll .... Santa Cruz Mike had a late-model Chevalier (? think it was a Chevalier) beefy knee mill with a late-model control. Then he bought a 1980 ExCell-O 104. The ExCell-O has about 24" in X and maybe 16 in Y and Z. Cute little horizontal. I think the rapids were actually the same as his Chevalier but the control was a lot older. Same parts, same program ran about 25% faster on the ExCell-O. Sumbitchin' beefy Gettys drives DO make a difference. That'd make a great project, imo - linear motors on that little mill. The thing is built like a brick shithouse.

There's one from the airport in pudong to downtown shanghai.

453 kph, I think. It's kind of a fun ride. I always hope they charged the batteries cuz it'd make a heck of a racket if the power went off :)

The Alaska earthquake was on a Good Friday at about three in the afternoon, Alaska time. That'd be about six in the evening, your time. We lost two blocks of neighbors into the inlet but got a great view. Never did like them stinking neighbors, anyway. Mom says they're building new houses there now .... boy are people dumb. Or greedy. Or both ! that earthquake lasted for over three minutes. That's a loooooong time for an earthquake. 1964.

Fields, both electric and magnetic, both propagate at the speed of light, at least according to JC Maxwell. Might be a tad slower in various media. The electric current itself flows quite a bit slower. At least dat wuz what I was told.

Hey, bud, Some of us like to take comfort in false rationalizations. I expect that one to be world-changing if it occurs. Maybe the smart ones are the ones living at ground zero.

A linear motor? Really? That's pretty cool. The battery thing is surely important, though. And maybe a REALLY good cow catcher. Is this a walkway, a train, or what?

KG

It's a CNC grinder for sharpening high-performance drills. It's small (around 4,000 lbs.), and doesn't need to be real heavy or powerful. It's designed for relatively light stock removal with carbide, HSS, or cobalt. And extreme accuracy isn't optional if you want the drills to work right. The big machine will do drills up to an inch; and the small one is for 5/8" and under, with room for an occasional 3/4" drill if you don't need to go too fast.

What's interesting is that the accuracy really works. I can take the run-out in the work-head spindle, and in the collet chuck, and in the collet, and add all those to the machine's positioning errors in four axes, plus the heat and pressure from grinding, and everythihng else that matters, and still get .0001" TIR lip-height difference on a

5/8 or 3/4 drill. And I can do that all day long. Even under the worst circumstances (worn wheels, high-volume runs, really bad drills that need more than normal stock removed, etc.) my customers typically won't tolerate a drill that runs out more than maybe .0003" TIR, unless they know it's a low-quality HSS drill that probably wasn't straight to begin with.

Prices are around $90k for the small machine, and $140k for the big one. The big one has some bells and whistles, like a three-stage filter system for the coolant (or oil, preferably), and an on-board video inspection system.

How many do you need?

KG

Im thinking this was later then 1965 probly.

I want to test it first... I got a box of drills that need sharpening

John

It is pretty kewl - normally it's a one-hour ride but the maglev does it in seven minutes. Only $6, too, but then this *is* a commmmunist country :)

have to admit that your idea is better tho .... a walkway. Maglev boots that you strap on. Whoa babee, *now* we're talkin' Dodge Charger !

When the Yellowstone Cauldera pops again....it will kill all the dinosaurs.

Gunner

"Considering the events of recent years, the world has a long way to go to regain its credibility and reputation with the US." unknown

"Charlie Gary" wrote in news:d0v8vm$tbg$ snipped-for-privacy@domitilla.aioe.org:

Hehe... If the US is ever attacked, I doubt I'll have to worry about it long. I'm about 70 miles or so from ORNL (Oak Ridge National Labratory) and

You could be a general ! i think you're fighting the previous war :-) Hard to predict the future but it seems unlikely that we'll ever see the kind of war Eisenhower and his follow-ons prepared us for. Seems hard to believe that Kennedy was right after Eisenhower, doesn't it ?