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  1. Replies
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    Jeff: Are you still interested in doing this? I...

    Jeff:
    Are you still interested in doing this?
    I have designed, fabricated, installed and currently use a few of these.

    But first, have you checked out the gantry crane available from Harbor...
  2. Thread: Spur gear?

    by dalecyr
    Replies
    17
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    1,413

    Went back and read the original post. (should've...

    Went back and read the original post.
    (should've done that first).

    26t and about 1 15/16" OD.
    That doesn't seem difficult to find.

    Just have to modify (probably) the hub/bore to fit your...
  3. Thread: Spur gear?

    by dalecyr
    Replies
    17
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    1,413

    I've had to make something like this a few times...

    I've had to make something like this a few times recently.

    It looks like the gear has 26 teeth; a fairly normal configuration.
    The only other thing a machinist would need to know is the diameter....
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    Well now... there's an interesting problem. If...

    Well now... there's an interesting problem.

    If you could touch the twine, a small rubber wheel comes to mind.


    If you can't touch it, about the only thing left is to look at it.
    That kind of...
  5. How is he intending to attach the side pieces to...

    How is he intending to attach the side pieces to the back piece?
    How will the supporting structure be attached to the wall?
    What is the wall made of?
    What do you intend to put on the shelf (how...
  6. Replies
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    1,394

    uuummm... I do have a premium membership. For...

    uuummm... I do have a premium membership.
    For the last few years.
    At least I paid for one. :)
  7. Replies
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    1,394

    More correctly... when I click the download link,...

    More correctly... when I click the download link, the site asks for userid/pw.
    I enter that, but it always says 'incorrect...'
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    1,394

    Kelly: I can't download the calculator because...

    Kelly: I can't download the calculator because the website apparently forgot who I am.
    Can you help?
  9. Replies
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    1,394

    Real world rigging problem

    I'm back. :)
    And, unfortunately, meeting with the client tomorrow afternoon.

    Referencing the attached pdf...

    I need to rig a video wall on a pipe grid.

    The grid is 6' x 6', schedule 40...
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    2,914

    At the risk of resurrecting an old thread... ...

    At the risk of resurrecting an old thread...

    Maybe we have a terminology difference.
    Both of my VFD's produce 3 phase 208Y from house hold 220 single phase.
    In addition to varying the speed of...
  11. Replies
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    I don't know about others, but I will often check...

    I don't know about others, but I will often check the site for updates to a thread without logging in.
    If there is something interesting, or if I want to see pics, then I'll log in.
    Just sayin...
  12. Replies
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    I'm intrigued... care to show a drawing of what...

    I'm intrigued... care to show a drawing of what you're talking about?
  13. Replies
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    1,474

    Ah, thanks. With that description and formulas,...

    Ah, thanks.
    With that description and formulas, I can write a program to iterate through a few dozen options, and probably make a graphic of how the various parameters affect the curve.
  14. Replies
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    1,474

    Rolling a tube. The application is using 3/4"...

    Rolling a tube.
    The application is using 3/4" square tubing to form the horizontal rails of a cocktail table.
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    1,474

    Tubing Roller math and physics

    I can't get my head around this one.
    I intend to build a tubing roller (different than a tubing bender).

    I'm having trouble with the math/physics of the roller placement.
    What does the distance...
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    With that kind of diameter and length, I think I...

    With that kind of diameter and length, I think I would be looking at pneumatic rather than electrical.
  17. w_flange-monorail/w_flange_monorail_calculator error

    Kelly:

    Thanks for putting this together. It is very useful.
    There does appear to be a small UI issue tho:

    The work area for this series of calculations is cutting off the results (the red...
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    Interesting. Have you actually worked on this...

    Interesting.
    Have you actually worked on this idea?
    Or is it more conjecture at this point?

    Lots of parts in a system like that....
  19. What is this for? And, a quick sketch of what...

    What is this for?
    And, a quick sketch of what you are thinking would be helpful...
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    Which press are you attempting to automate?

    Which press are you attempting to automate?
  21. uuuummm.... unless the springs bottom out before...

    uuuummm.... unless the springs bottom out before the handle is fully pivoted.
    Like when a 'thick' object is clamped.
    Then the pad pressure can get quite high.

    (just jumping on the nit-picking...
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    Bob: Because you are posting here, seeking...

    Bob:

    Because you are posting here, seeking this kind of knowledge,
    I suspect you are dealing with the main hoist line on a simple
    boom truck.

    In that case, you will want to go with the design...
  23. Thread: Welded Tab

    by dalecyr
    Replies
    1
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    1,702

    PDF File Attachment Click to Download ->1432 ...

    PDF File Attachment Click to Download ->1432


    https://www.engineersedge.com/engineering-forum/attachment.php?attachmentid=1431&stc=1

    Maximum Proof Load is 2 times the Working Load Limit...
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    Timelord is correct. You will melt the PVC...

    Timelord is correct.
    You will melt the PVC quickly.

    But you have not described a jet engine.
    One definition of an engine is: a machine for converting thermal energy into mechanical energy or...
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    You did not address this, but I feel compelled...

    You did not address this, but I feel compelled to, for the benefit of others that may not know:
    there is only one acceptable way to tell if you have crimped the oval, or the stop correctly.
    use a...
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