Search Results - Practical Machinist - Largest Manufacturing Technology Forum on the Web
Close
Login to Your Account

Search:

Type: Posts; User: Finegrain

Page 1 of 60 1 2 3 4

Search: Search took 0.04 seconds.

  1. Um, maybe you were here for a very unique 18...

    Um, maybe you were here for a very unique 18 months. I've been here (15 miles east of downtown Seattle) for 24 years, and it totally rains a lot in Spring and Autumn. The frequent (albeit light) rain...
  2. Replies
    7
    Views
    519

    I was intrigued when I saw a robot shuttle a...

    I was intrigued when I saw a robot shuttle a human into the vehicle to do some trim work in the cabin. What if the human is sitting on the seat janky, or some real big fella or lady takes over at...
  3. Thanks Dan! The service tech came over today and...

    Thanks Dan! The service tech came over today and took that cover off, exposing not 1, but 3 limit switches. One for toward-the-spindle limit, one for away-from-the-spindle limit, and a third for...
  4. Update ... Found the switch. It's a roller...

    Update ...

    Found the switch. It's a roller switch mounted on the underside of the back of the cross slide casting, about 2" from the left edge of the cross slide (looking from the console). You...
  5. Mori- Seiki SL-2B Z-axis limit switch -- where is it?

    Hello,

    I overtraveled my Mori Seiki SL-2B which is usually not a big deal, just jog off of the switch and clear the alarm. But today I'm unable to clear the alarm even after moving the Z-axis way...
  6. Replies
    22
    Views
    1,158

    At .005" feed I'm not surprised. But at least you...

    At .005" feed I'm not surprised. But at least you know it's not cast iron :).

    Regards.

    Mike
  7. Replies
    22
    Views
    1,158

    Could be something that was case-hardened. Try...

    Could be something that was case-hardened. Try half the speed and 2-3x the feed.

    What shape and color are the chips?

    Regards.

    Mike
  8. Replies
    22
    Views
    1,158

    Is the outside shiny? Is it magnetic? What...

    Is the outside shiny? Is it magnetic?

    What speeds and feeds have you tried?

    BTW that's a helluva lathe to be dinking around with mystery metal. How is it the shop owner turned you loose under...
  9. Well it sure sounds like machining is the way to...

    Well it sure sounds like machining is the way to go. You need crisp, angled, decent depth, and no undue forces.

    Might look at a very high-RPM mill. 27k RPM can make quick work of it.

    I'm...
  10. Replies
    11
    Views
    573

    Oh, I see. Well then definitely I would do it all...

    Oh, I see. Well then definitely I would do it all in the mill. +/-.001" is straightforward in the mill unless it's an old knackered POS. Might have fussy surface finish requirements in the O-ring...
  11. Replies
    11
    Views
    573

    I would do everything except the final ID...

    I would do everything except the final ID features in the mill. Then make a fixture with a part-shaped pocket and 2 threaded holes. After the mill work, bolt the part onto the fixture, grab the...
  12. Replies
    157
    Views
    8,392

    My advise is to pick something you are most...

    My advise is to pick something you are most likely to get help with, either a nearby shop that is willing to help you along, or online tutorials, or something like that. Most folks will tell you that...
  13. Replies
    8
    Views
    821

    Doesn't G33 take a "K" parameter for the lead?...

    Doesn't G33 take a "K" parameter for the lead? Maybe your control is smart enough to translate that F1.5 into K1.5.

    But yeah, what spindle speed? If not a quite small RPM, I doubt your Z-axis can...
  14. It's possible, but rare. I'm coming up on 1 year...

    It's possible, but rare. I'm coming up on 1 year with Xometry. 95/100 jobs offered are dismissed immediately on account of I can't do them, or the pricing is completely bonkers. Of the remaining 5, I...
  15. Replies
    2
    Views
    453

    Certification won't be interesting to you unless...

    Certification won't be interesting to you unless you are working under ISO 9001 or some other regimen that requires it. Just check them with a good micrometer as you use them and carry on.

    I have...
  16. Replies
    5
    Views
    629

    My Brother Speedio has some absurdly small...

    My Brother Speedio has some absurdly small backlash comp increment -- I think it is .00001mm. I have settings of around 400, which manifests in something like .0002" of comp.

    Regards.

    Mike
  17. I don't think you can do a G1 (you said, "IPM,"...

    I don't think you can do a G1 (you said, "IPM," so ...) with the chuck open. Try G0 instead.

    Regards.

    Mike
  18. Larger -- in the first order, holes act like...

    Larger -- in the first order, holes act like solids for the purpose of thermal expansion.

    Otherwise, the "ball going through the ring" experiment in Physics class would have behaved the opposite...
  19. He probably means the 2nd week in August. So nice...

    He probably means the 2nd week in August. So nice that time of year :crazy:.

    Regards.

    Mike
  20. A thin ring will act like a strip that has been...

    A thin ring will act like a strip that has been rolled into a circle, so it is the circumference that grows or shrinks per the linear coefficient. A solid circle would grow and shrink per the...
  21. Since we are discussing work stops ... Here's...

    Since we are discussing work stops ...

    Here's what I came up with. It's adjustable in 3 axes, and sturdy enough to stay put in case you slide a heavy piece up against it a bit too hard. The rod...
  22. Yes, but only with the jaws supplied by Talon...

    Yes, but only with the jaws supplied by Talon Grip. I had to bore out 4 or 5 stripped-out screws. Now I make my own jaws out of tight-tolerance 1018. I have no idea why, but I have yet to get a stuck...
  23. Soft jaws with carved-out pockets? Lots of words...

    Soft jaws with carved-out pockets? Lots of words there in your post, but it seems like you are trying to hold onto finished surfaces to do further machining. That's what soft jaws are for.

    Maybe...
  24. Replies
    10
    Views
    1,047

    I've run a crappy Jet lathe too, but a ZX is a...

    I've run a crappy Jet lathe too, but a ZX is a whole different breed of machine. If I could find one locally lightly used, I'd want it.

    Regards.

    Mike
  25. Replies
    17
    Views
    1,448

    You need to validate the tool's X and Z offsets...

    You need to validate the tool's X and Z offsets each time you swap the insert. How you do this is up to you. You can run a different program, on a piece of similar but not precious stock, that cuts a...
Results 1 to 25 of 1500
Page 1 of 60 1 2 3 4