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Type: Posts; User: David_M

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  1. https://www.practicalmachinist.com/vb/transformers...

    https://www.practicalmachinist.com/vb/transformers-phase-converters-and-vfd/
  2. 16d nails?

    16d nails?
  3. Replies
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    I just checked my link and it is not working for...

    I just checked my link and it is not working for me. It seems that MSC doesn't like how this website adds on affiliate information:

    ...
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    Morse taper solid socket or Morse taper socket. ...

    Morse taper solid socket or Morse taper socket.

    https://www.mscdirect.com/browse/tn/Tool-Holding/Morse-Taper-Sleeves-Sockets/Morse-Taper-Sockets?navid=12108514#navid=12108514+4287945684
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    If you have a clamp-on amp meter see if it is...

    If you have a clamp-on amp meter see if it is drawing too many amps in the trouble zone. It is probably a valve problem that is keeping the high pressure cylinder from doing its part of the work.
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    Just to show that the C constant is exactly the...

    Just to show that the C constant is exactly the same for the Index and the Feed. Here goes:

    https://pbase.com/d_a_v_i_d/image/169808723.jpg


    The C constant is 10.7011494252873563218390804597...
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    Here's one where the C constant is 9.9453125 ...

    Here's one where the C constant is 9.9453125

    In fractional form it is: 9 9453125/10000000

    30 * 9.9453125 / (41 * 9.9453125) - 1 =

    30 * 99453125 / (41 * 99453125) - 10000000 =

    2983593750...
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    I know some people who cut helical gears (not...

    I know some people who cut helical gears (not talking about anyone on here) will scoff at the notion of having a C constant in any form other than a whole number.

    I want to prove that that concept...
  9. https://pbase.com/d_a_v_i_d/image/169777433.jpg ...

    https://pbase.com/d_a_v_i_d/image/169777433.jpg

    Dummy scaled smaller with a lower pre-load. Balanced mathematically.
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    And is is possible to have nitrided maraging...

    And is is possible to have nitrided maraging steel without affecting the age harding of the maraging steel:

    https://iopscience.iop.org/article/10.1088/1742-6596/100/6/062013/pdf

    This combines...
  11. That is Rockwell E hardness. You are thinking in...

    That is Rockwell E hardness. You are thinking in terms of the Rockwell C scale.
  12. It would be interesting to hear if thin blades...

    It would be interesting to hear if thin blades coated with BAM or diamond-like carbon could overcome that 'gripping'.

    Material slicker than Teflon discovered by accident | New Scientist

    BAM and...
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    PM Sent...

    PM Sent...
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    Thanks Dan. I'll PM you, shortly. Best...

    Thanks Dan. I'll PM you, shortly.

    Best regards,

    david
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    Even if I allowed + or - 1 on the last digit? ;)...

    Even if I allowed + or - 1 on the last digit? ;)



    Whoever wants to do it can ignore the excessiveness and make it using their normal shop practices. I'm easy to please and I pay in american.
    ...
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    transverse pitch diameter. oops. I updated...

    transverse pitch diameter. oops.

    I updated those photos after John pointed out my mistake in nomenclature.
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    Could I get two gears cut by a forum member?

    I would like to purchase two helical gears from a forum member. These need to be hobbed on a gear hobber that uses manual change gears.

    Below shows the specifications. I am interested in having...
  18. Thread: Testing

    by David_M
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    https://pbase.com/d_a_v_i_d/image/129430118.jpg

    https://pbase.com/d_a_v_i_d/image/129430118.jpg
  19. I have the same with 56,000 miles. It has been...

    I have the same with 56,000 miles. It has been trouble free.
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    Finegrain is right. Look up *Higbee thread...

    Finegrain is right.

    Look up *Higbee thread start* on here and look at this: YouTube

    These videos show how to get started at least. Pick the ones that say Higbee or blunt start threads. This...
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    You can change one digit for the bearing:...

    You can change one digit for the bearing: 63032RSJ instead of 62032RSJ. That is a heavier series bearing with the same bore. It has a 47mm od vs 40mm and is 2mm wider.
  22. High-strength magnesium-lithium alloy weighs half...

    High-strength magnesium-lithium alloy weighs half as much as aluminum
    January 01, 2016
    Source: ASM International
    The University of New South Wales and Monash University, Australia, announce that...
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    What about the side-pipe market? 262352 ...

    What about the side-pipe market?



    262352

    https://pbase.com/d_a_v_i_d/image/169581066
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    Let this girl show how to do it: YouTube...

    Let this girl show how to do it: YouTube Watch at: 2:30-2:35.
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    262129I'm just kidding.

    262129I'm just kidding.
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