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  1. Replies
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    Are the die springs so closely constrained in the...

    Are the die springs so closely constrained in the spindle bore that runnout and unbalance are never an issue? In that case, what about rubbing wear?
  2. Thin parts can be difficult to hold with mag...

    Thin parts can be difficult to hold with mag chucks. Before guessing on the Suburban, consider sending it back to them for service and review, contact them to get an estimate for the cost.

    For...
  3. Sent you a PM, and yes, I'm serious...

    Sent you a PM, and yes, I'm serious...
  4. For what you're describing, a single layer of...

    For what you're describing, a single layer of regular printer paper (~.003" thick) formed into a loop (strip ~.5" x 1" wrap around rod with 1" length) and the excess tail tucked into one of the...
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    If the stud failure from the OP was due to work...

    If the stud failure from the OP was due to work hardening to failure, I think we should see some gradation of stress/cracking on the break face. As it is, the face is uniform, as from a homogeneous...
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    Good points. Probably best to buy from a...

    Good points. Probably best to buy from a Carpenter or the like, to ensure better control of the raw steel.
  7. I've gotten material from them, as well as...

    I've gotten material from them, as well as McMaster (who stocks a limited range of pre-ground material), and while the product's good, you'll pay through the nose for it. In the OP's shoes, I'd do...
  8. We don't know how flat and parallel your machine...

    We don't know how flat and parallel your machine can cut. With a reasonably good shape Haas, then yes, with a few flips you should be able to cut a plate of that size flat and parallel on a vac...
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    To add to my post #261 - while I haven't run a...

    To add to my post #261 - while I haven't run a 30T, I have run a micro-precision five-axis machine that used ISO 10 holders, which make 30T look like 50T (or bigger). So I have some idea of dealing...
  10. Replies
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    I do not. I do run a couple wussy Haas spindles...

    I do not. I do run a couple wussy Haas spindles (40T) that I've made custom oversize/length tooling for, and haven't had a problem as I tailor S/F to circumstances.

    I don't think balance or...
  11. Replies
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    Hi David, The OP's first post says he did...

    Hi David,
    The OP's first post says he did thousands of the parts over five years with that program (and presumably tooling), so the question of stack length and balance are (I think) not relevant. ...
  12. Replies
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    People can be grumpy at Mickey_D for his thread...

    People can be grumpy at Mickey_D for his thread title, but it has spurred the most comprehensive thread on 30 taper machines I've ever seen on this forum. That's a good thing, and with luck...
  13. Don, check these out: Amazon.com: Stabilizers -...

    Don, check these out: Amazon.com: Stabilizers - Professional Video Accessories: Electronics

    Active stabilizing for some, weighted gimbals for others.
  14. Replies
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    Uhh, Bob? You may want to run the numbers and...

    Uhh, Bob? You may want to run the numbers and your conclusion again...
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    Would abrasive grit blasting of the existing bore...

    Would abrasive grit blasting of the existing bore be acceptable? You might need to test the process on a spare part to ensure not wrecking a good piece.

    Is this for adhesion properties? If so,...
  16. Replies
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    In general, I agree. But on the specifics, there...

    In general, I agree. But on the specifics, there can be surprises for those used to larger spindle tapers. The combination of lighter drawbar retention force and smaller stem diameter means the...
  17. Replies
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    With QC, you're better off hiring "older" and...

    With QC, you're better off hiring "older" and good people, as the experience helps in measurement setup methods and accurate process results.

    Unless your "young and good" really means "cheap and...
  18. Replies
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    The thread's not useless, just incomplete. Given...

    The thread's not useless, just incomplete. Given the relative number of 30 taper spindles to 40 taper on this forum, it's safe to say that we have more broken pull studs with 30's than 40's. What...
  19. Replies
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    Hey Vanc, I was just rereading the "I killed my...

    Hey Vanc, I was just rereading the "I killed my spindle" thread (I killed my spindle...), when I saw your post #61 from 2-28-18:



    Better get on it, or are you waiting for a 2020 "Broke my 30...
  20. Replies
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    Hold up here. If the studs he tested failed as...

    Hold up here. If the studs he tested failed as readily as it seemed (easy brittle failure, no ductile behavior) it is a useful bit of info. It's why I asked if he had non-Maritool studs of the same...
  21. Replies
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    Do you have any non-Maritool 30 taper pull studs...

    Do you have any non-Maritool 30 taper pull studs you can hit in the same manner? If you're going this far you might want to hack together a Charpy(ish) pendulum tester to get consistent impact...
  22. Replies
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    And here's another thread on a 30-taper stud...

    And here's another thread on a 30-taper stud break: I killed my spindle...

    Pay particular attention to post #20...
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    It might be worth getting some hardness testing...

    It might be worth getting some hardness testing done on the pull stud remains at the cylinder and crack face, as well as on the ball seating cone. I do find it odd how dented the cone is, as well as...
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    It means "take a chance", as in, the fan doesn't...

    It means "take a chance", as in, the fan doesn't cost much, so measure it up, confirm voltage, then go to Allied or one of the other major electronics supply sites and buy a fan that matches as close...
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    Sounds like a good excuse to get one. :) In...

    Sounds like a good excuse to get one. :) In fact, you can find rotary fixturing that works off simple M codes or even mechanical actuation, no need for a full 4th-axis. It just has to be a stiff...
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