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  1. Replies
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    1,295

    Heck, bid $10. He will probably take it.

    Heck, bid $10. He will probably take it.
  2. No! The nominal diameter of an external thread is...

    No! The nominal diameter of an external thread is the nominal diameter WITH THE FLATS ON THE CRESTS. Any decrease in the actual diameter from that nominal diameter is accounted for by either the...
  3. That's the first time I have actually seen this...

    That's the first time I have actually seen this in print. It is exactly what I concluded. Thanks for posting it.
  4. Why 3/4 H and 5/8 H Confusion?

    I wondered just why the actual thread percentage calculations were almost always based on the 3/4 H thread height but the drawings, supposedly the specifications, seemed to be using the 5/8 H thread...
  5. Continued: Actual Percentages of Various Tap Drills Mentioned Above

    My last post got too long. So here is another chapter, hopefully shorter.

    Using my tap drill calculator here are some actual percentages of thread that the various drills that were suggested...
  6. This is a subject that has attracted my interest....

    This is a subject that has attracted my interest. I saw different numbers being thrown about in posts like this so I became curious as to just what constituted a 75% thread and by extension, what...
  7. Replies
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    1,816

    It's threads like this and comments like this...

    It's threads like this and comments like this that make me scratch my head.

    We obviously have an original poster who is in some kind of commercial environment. He clearly needs a manual lathe and...
  8. Replies
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    1,293

    A rust remover will remove the rust, even the...

    A rust remover will remove the rust, even the rust that is down in a pit or scratch. If used according to the instructions, it will not remove any of the non-rusted metal. That means that you should...
  9. Replies
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    2,192

    Sorry, but when those things go boom, running...

    Sorry, but when those things go boom, running shoes just aren't going to cut it.
  10. Wait a minute. Something just occurred to me. ...

    Wait a minute. Something just occurred to me.

    HE PICKED YOUR BRAIN for the ideas for his project. Not the other way around. It seems to me that you are the one who should be asking HIM to sign a...
  11. Nice project. I'm sure it will earn it's keep in...

    Nice project. I'm sure it will earn it's keep in your shop.

    Unless you are running hundreds of parts a day with it, I don't see any real need for hardening.
  12. Replies
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    797

    Some videos: This one is animated: ...

    Some videos:


    This one is animated:

    YouTube


    About 1:25 here:
  13. I don't get it. I looked at their web site. They...

    I don't get it. I looked at their web site. They advertise instant quotes. But from what you guys are saying, then they have to go out and find someone to actually do the job. And now that shop has...
  14. Replies
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    4,214

    I would have to agree with that. As an experiment...

    I would have to agree with that. As an experiment I made this handle for the cross slide of my SB-9. Please ignore the TV remote that I used to prop it up at an angle for a better view.
    ...
  15. Replies
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    2,772

    Yes, it is BS, but not a real problem. Declare...

    Yes, it is BS, but not a real problem. Declare yourself a company. Pick a company name that sounds nice. It doesn't need to have air conditioning or heating or HVAC in it, any name will do. But don't...
  16. I think this answer is going to come down to...

    I think this answer is going to come down to specific answerS for each type of part.

    My RT has a Morse taper in it's center. I purchased an unhardened MT adapter for a large size Jacob's chuck so...
  17. Replies
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    762

    It sold for about $1.25? Brass is a better...

    It sold for about $1.25? Brass is a better investment than gold or silver.
  18. Replies
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    1,897

    Or use a pick to bend the existing brass sleeve...

    Or use a pick to bend the existing brass sleeve back to normal.
  19. I just cut solid copper wire into an appropriate...

    I just cut solid copper wire into an appropriate length, usually 12 or 14 gauge but larger sizes may be appropriate for larger set screws. It only takes a second or less to cut each one with a pair...
  20. Remind me to keep you guys away from my mill.

    Remind me to keep you guys away from my mill.
  21. Replies
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    867

    Edward Paul Alciatore, USMC, RIP below the waters...

    Edward Paul Alciatore, USMC, RIP below the waters of the Pacific Ocean, 1923 - 1943.

    And all the others who paid the ultimate price in the past wars that made our country and made it great. May...
  22. I was thinking the same thing about rough, cast...

    I was thinking the same thing about rough, cast surfaces. If the nuts are bearing on such a surface, then it could easily apply a torque to the vise as it is tightened. I would machine such a surface...
  23. Replies
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    And that is why smaller lathes, with higher...

    And that is why smaller lathes, with higher spindle speeds, are generally used for such work. In my shop I would use my Unimat instead of my SB.

    But then, I consider such calculations as...
  24. Replies
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    2,772

    "I can do the instal my self." And yet you are...

    "I can do the instal my self." And yet you are asking a slew of basic questions.

    Heck, you can't even spell "Install" properly. And the noun is "installation"; "install" is the verb.

    I...
  25. Replies
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    Posting images? Here you go. ...

    Posting images? Here you go.

    https://www.practicalmachinist.com/vb/images-and-links/using-boards-image-hosting-350499/#post3176881
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