Can something be TOO flat ?

I know this sounds like Blasphemy!!!!!!!!!!

But how about making some figure 8s with a red scotchbrite pad over the entire surface? Just a light once over?

Gunner

" ..The world has gone crazy. Guess I'm showing my age... I think it dates from when we started looking at virtues as funny. It's embarrassing to speak of honor, integrity, bravery, patriotism, 'doing the right thing', charity, fairness. You have Seinfeld making cowardice an acceptable choice; our politicians changing positions of honor with every poll; we laugh at servicemen and patriotic fervor; we accept corruption in our police and bias in our judges; we kill our children, and wonder why they have no respect for Life. We deny children their childhood and innocence- and then we denigrate being a Man, as opposed to a 'person'. We *assume* that anyone with a weapon will use it against his fellowman- if only he has the chance. Nah; in our agitation to keep the State out of the church business, we've destroyed our value system and replaced it with *nothing*. Turns my stomach- " Chas , rec.knives

Reply to
Gunner
Loading thread data ...

I considered this myself, but I think it's time I learned how to use a scraper for something other than making a bad fit, worse.

Alan

Reply to
Alan Rothenbush

The oil feed is a couple of GITS cups, and the "owner's manual" says to refill them once a week in normal use.

I'm not sure that's a solution .. sounds like scraper time.

He moaned about the quality of it all day, but based upon what I see in front of me, when he throws it out, I'm going to pick it up !

I think I got a first hand lesson on the difference between a machinist and a tool and die maker. I always kinda thought a T&D guy was a machinist who made tools. I'm starting to think the comparison is more along the lines of a woodworker and a machinist; just a whole order of magnitude higher precision.

Marcus was perfectly happy spending his whole day knocking a tenth off, blueing and measuring, knocking a tenth off, all day, until it was "right". I thought it was just fine about an hour before we finally did finish, but Marcus wasn't quitting until it was "done".

It was a very informative day.

Alan

Reply to
Alan Rothenbush

Go wash your mouth out with soap. Now go to the blackboard and write, 1,000 times,...

Something simple ought to work, and maybe Scotchbrite isn't a terrible idea, but there must be something better.

I was wondering about acid, but I don't want to be liable for contributing to the wrecking of somebody else's machine.

Ed Huntress

Reply to
Ed Huntress

Yes, that's right. JC (the wire edm guy) met him one time. I think that was when moore was still in bridgeport, he said that the neighborhood around the plant was very bad.

Jim

================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ==================================================

Reply to
jim rozen

Scotchbright contains silica and this might possibly embed in the ways and continue to cause wear. I would avoid it.

Jim

================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ==================================================

Reply to
jim rozen

Actually, you are in the range where the lubricant can't flow into the hills and valleys that are still lef freelyt. In other words, you aren't flat enough! The best way is to put a bunch of grooves in one of the surfaces to allow the vacuum to easily allow the flow of the lubricant into those areas that open up. This is a problem that often happens with grinding an optical glass surface and we work it out by grinding the surfaces into better contact with the grit that we are using. Ultimately tho, if the surfaces are too smooth and in good contact with each other, you can get welding of the two pieces together as has been found out about in space where there is no air to hold the pieces apart. If you want to, put some more prussian blue on the ways and do a little more scraping to get things even flatter which will minize the hills that are left, making the generation of a vacuum less and then scribe some flow lines into one surface to allow for the lube to flow better.

-- Bob May Losing weight is easy! If you ever want to lose weight, eat and drink less. Works evevery time it is tried!

Reply to
Bob May

Try silicone or graphite?

Reply to
Stormin Mormonn

Or give it a going over with some #60 sandpaper.

Reply to
Ian Stirling

Technically, yeah. Think about Jo blocks. But I don't think you can get there with a grinder. :-)

I wouldn't mess with it until I was sure both parts had had a chance to warm up and get comfortable in their new surroundings after their ride home.

After that, I'd see whether I needed to deGauss either of the parts. You briefly mentioned mag bases, but didn't describe any of it for me to to do anything but offer a wild (and possibly humiliating) hunch.

After that, it sounds like it's time to wipe the ways dry and a try a little Dykem. See whether it's localized somewhere.

hth, Fred Klingener

Reply to
Fred Klingener

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.