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Type: Posts; User: flick

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  1. Re: Epoxy-Granite machine bases (was Polymer concrete frame?)

    But has anybody tried sawdust? Aside from these guys, I mean: https://iopscience.iop.org/article/10.1088/2053-1591/ab279e
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    Re: Coating for insert holders

    The appearance is right for gun bluing Jim Dawson, but I've done my own cold bluing at home, and didn't find it very durable. Maybe it would be OK as long as it was only used in conjunction with...
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    Coating for insert holders

    What kind of coating or surface treatment is used on milling and turning insert holders? Seems invincible to corrosion. I want to make my own from 4140. Suggestions?
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    Re: Dumb Thread mill question

    I very much understand the advantages of hand-writing g-code, and in our brief interaction you've easily convinced me that you can do everything you say can, because I can too, but that doesn't make...
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    Re: Dumb Thread mill question

    Interesting insights Roger. In my neck of the woods, it's taken more or less for granted that "in the beginning there was fanuc...". I never really thought to question this. Which isn't to say I...
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    Re: Dumb Thread mill question

    Thanks for the response(s) Roger. I'll acknowledge that much of how we program is a matter of style and habit. I may program the way I do because I'm used to working with CAD/CAM generated code, so...
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    Re: Dumb Thread mill question

    Nice code!

    But I'm guessing you've only used it with #2 = 0.0? Otherwise I think it would have malfunctioned when it hit y0 on the "gentle engagement" line, as well as in the sub.

    Did you...
  8. Re: Difference Between Geometry Offset and Work offset

    Of course you must change the work offset when the job changes.

    At that point, you would normally face the new workpiece or touch the face of the new workpiece with the master tool, and use it...
  9. Re: Difference Between Geometry Offset and Work offset

    Oh, I misread your previous post - only saw "work offset" and missed that your first reference to offsets was "geometry offset". Yes, you're right of course on both points: adjusting the master tool...
  10. Re: Difference Between Geometry Offset and Work offset

    It's tempting to think this, because the master tool geometry is established with the work offset. The problem is that every other tool is also affected by the work offset. So if you correct the...
  11. Re: Difference Between Geometry Offset and Work offset

    Editing this to add, I just noticed you were asking about lathes, not mills. My explanation below is still pretty much valid if you replace "table" with "chuck" and "spindle" with "turret", and...
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    Re: Adjustments for accuracy?

    Using a torque wrench is a great idea. I bought an inch-lb torque wrench for this purpose when adjusting my own gibs. By tightening the gibs while moving the table with the torque wrench you can...
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    Re: Adjustments for accuracy?

    Yeah... especially if the ways are so sloppy that they aren't rigidly pushing said tool into the cut.

    Look, you seem pretty married to your idea, so if you think gib adjustment is "insignificant"...
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    Re: Adjustments for accuracy?

    I read your post, and I'm aware of the sizes involved, and I understand the math. I don't think you're necessarily wrong, but there are certain assumptions involved that may or may not be correct -...
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    Re: Adjustments for accuracy?

    All this math is great, but it's pretty obvious that a 5 thou finish pass doesn't actually bend the tool by 2 thou, unless there was something very wrong about the tool holding practices involved....
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    Congrats on your improved results. Bear in mind...

    Congrats on your improved results. Bear in mind that the Y axis gib is the one that would affect sizes in the X direction.
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    Re: Adjustments for accuracy?

    Since your machine is repeating, the accuracy you're looking for is easy to obtain if you can straighten out those walls.

    CountrySmith is right - all signs point to deflection. The deflection may...
  18. Re: [PCNC 1100] Perpendicularity of X Y motion - Out Of Spec.

    I imagine we're dealing with a little of both, but I haven't gotten tired of saying it yet, so I keep holding out hope that the message will get through. :)
  19. Re: [PCNC 1100] Perpendicularity of X Y motion - Out Of Spec.

    It's true that using the movable jaw as a reference is poor practice, but the thing you have to ask yourself is, "What's the reference?". In this case, one side of the square is measured with...
  20. Re: Can Mach3 to back farther away from home switches

    You could change the script for the RefAll button. I did this for a different purpose - to improve accuracy of the homing motion.
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    Re: Deep Face Grooving

    336496336498

    Your problem interested me, so in thinking about how I would tackle it, I designed this simple tool.

    I think you want a face grooving tool, not a trepanning tool. That way you can...
  22. Re: [PCNC 1100] Perpendicularity of X Y motion - Out Of Spec.

    And it wouldn't be good clamping practice if you were trying to get a workpiece to align with the vise, or if you were trying to secure the work against cutting forces. Maybe that's where some of the...
  23. Re: [PCNC 1100] Perpendicularity of X Y motion - Out Of Spec.

    Sweet merciful crap, he dialed both sides of the square in his video. Dialing the vise is irrelevant, it's the fixture, not the reference. The square could be held in place with a vise, a stud,...
  24. Re: [PCNC 1100] Perpendicularity of X Y motion - Out Of Spec.

    Exactly. It's preposterous (to think that it would). So the method of fixturing is irrelevant as long as it's not actually loose.

    ETA: everything in brackets, for clarification.
  25. Re: [PCNC 1100] Perpendicularity of X Y motion - Out Of Spec.

    This is a good point. The answer to OP's OQ is: Your machine perpendicularity appears to be out. There are no provisions to adjust. A loose gib could explain the problem, but if you've attempted...
  26. Re: [PCNC 1100] Perpendicularity of X Y motion - Out Of Spec.

    Yeah. But, as has already been noted in this thread, if one side dials true, then the other side should as well, unless the part moved between dialing one side and the other? Can we please respect...
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    Re: [PCNC 1100] Y-Axis Gibb Issue

    I'm certain you're correct. My conversations with Tormach (about 3 or 4 years ago now) revealed at the time that they were aware of the bowed gibs but did not find them to be cause for concern. They...
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    Re: [PCNC 1100] Y-Axis Gibb Issue

    I scraped one side flat with reference to a surface plate. Use Prussian Blue to find the high spots. I'm not sure if Dykem (mentioned above) makes Prussian Blue, I've only seen their layout bluing,...
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    Re: [PCNC 1100] Y-Axis Gibb Issue

    It's not by design, but it's not designed to be much better. Yours may be worse than average. I was also dissatisfied with my gibs, but ended up having to remediate them myself. It made a big...
  30. Thread: USB for Haas TM1

    by flick
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    Re: USB for Haas TM1

    Yup. But don't get your normal USB stick mixed up with your Floppy formatted USB stick. If you put the wrong one in the wrong machine, you might just lose ALL your data! Fun!
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