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I tried just putting the 3/8" collet (with the 3/8" rod inserted into it) into the chuck - without using the nut - hoping that friction would keep it there while I rotate it slowly and look at it....

Hello,

I'm hoping someone can help me figure out a problem.

I recently bought an ER40 MT3 collet chuck from a seller on Ebay, for my Micromark 7x14 mini-lathe.

Shortly after that, I bought a...

This thing is still driving me crazy.

I had to take a little time away from it because I injured my shoulder, but now my shoulder's feeling a little better, and I'm back at it again, but now I'm...

I took the saddle off the base, removed the feed screw, wiped off the lubricant, reinstalled the saddle (but not the feed screw), tightened the gibs somewhat, and moved the saddle back and forth over...

Thanks very much for your reply Hoss.

Do you think I should ask for a replacement before I do ANYTHING, or should I try lapping it first? To put it differently, would it be (1) Ask for a...

No matter how I try to adjust things, I cannot get the Y axis to move across its range of travel without being sloppy at the ends and tight in the middle. If I tighten it down so there's no...

I emailed LMS, and they replied that they're going to send me another one. Apparently their stock had some standard length screws mixed in with the longer ones.

Hello,

I just received from LMS the solid column conversion kit, #4483, and the recommended (Chris' tips) Y axis feed screw, #3944.

When I went to install them into my Micromark #84630 mini...

Thanks for the replies. It would be nice for a change to just be able to buy something off-the-shelf that's ready to go, as is, without having to assemble kits and make adapter cables and pull your...

I've heard that Shumatech sells kits or something, but according to what I see at their online "store", they've been "out of stock" for so long now they might as well not even have a web site.

Actually the SX2 should be "big" enough for what I want to do (and due to size and weight constraints, i.e., mobility constraints, it is all I can reasonably have right now), I just don't want it...

Hello B-RAD,

That's a nice job you did there. BTW which mill is that, is that the LMS 3900?

I think if I had the 3900, I would just make my own support bracket like you did. But in my case,...

Yep, that's a lot of money for those parts, and the shipping is a killer. Especially considering that you're left with the useless old parts, which, if you had to buy them, would apparently cost...

Well I was thinking about making some kind of a column support plate to reduce the flexing/vibration of the column of my Micromark SX2 mill, but the more I think about it, I like the idea of the...

Actually, the Vertex 6" table has three slots (and IIRC I think it is *only* 6" table with three slots that I've seen), so the chuck will bolt directly to it, as shown here.

I thought about...

Thanks for the ideas on mounting and tweaking.

I got this chuck to use primarily on the rotary table, but in the future I plan to make an adapter plate so I can also use it on my 7x14 mini-lathe....

Lsces, what do you think of this idea:

On my Vertex 6" rotary table, there's a flange that bolts to the body of the table with 4 M3 socket head cap screws. The flange holds the eccentric housing...

Well I was finally able to find a front (or rear) mounting, 5" 3-jaw chuck at an apparently reasonable price of $110 on ebay.

Despite the best efforts of Vertex to prevent me from getting it,...

Hello Hoss thanks for the info.

I was thinking about just using a few standoffs and a plate to mount the motor, to keep the assembly as light weight and simple as possible, and then I went to...

Hello lsces,

Thanks for your reply. If I understand correctly, you're saying that: yes, the motor does work against set screws (actually two sets of radially "nested" set screws, right?), but in...

What about an MT2 collet, with something (e.g. a 0.5" reamer blank), chucked into it?

I'm thinking about making an "electronic indexer" for my 6" Vertex rotary table, but up front I'm wondering: How are people attaching stepper motors to tables like this?

From a few examples that...

By "vertical wobble" do you mean, for example, a high or low spot when measuring the height of the table's surface with a dial indicator, as the table is rotated?

I had the rotary table bolted to the milling machine table, and I had the dial test indicator held in the milling machine chuck.

Anyway, I found something I did wrong. I looked in the bore and it...

I was interested in seeing actual measurements from other 6" rotary tables - by themselves - just so I could see how this Vertex table compares.

I do have a 5" 3 jaw, front-mounting Vertex chuck...

Well maybe it's not a problem, but they claim this particular table tested at 0.01 mm which is almost half of what I'm measuring, right?

(Also I just checked the data sheet for the other table,...

I just measured the bore of this Vertex 6" table for runout, and I'm getting about 0.0015" (peak to peak reading on a dial test indicator which is against the wall, about 1/8" below the table top).
...

I took both units apart, and the first unit bound up because there was a loose machine screw floating around inside.

And the second unit was defective apparently because of a bent shaft or...

Ok I was wrong, it was just an M4 setscrew holding the eccentric housing in, and I took it out, and then I pounded the worm shaft out of the housing with a rubber mallet, and it doesn't look like...

I broke down and took the second table apart (except for the eccentric housing, through which passes the worm shaft) just to see what the hell was going on.

It's built very similar to the Grizzly...