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Type: Posts; User: Kelly Bramble

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  1. ISO states that by default the principle of...

    ISO states that by default the principle of independency applies to features of size unless:

    1) The Envelope Requirement is specified (circle E).
    2) A Geometrical tolerance is specified with/to...
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    By industry standard, both ISO ad ASME (ANSI),...

    By industry standard, both ISO ad ASME (ANSI), inch units are expressed with trailing zeros of same significant figures but not leading zeros.

    And, ISO and ASME specifies that SI units, or mm are...
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    I don't think you understand that your question...

    I don't think you understand that your question does not have a simple answer. The hull and associated structural members of a boat is more complicated then "xxx" thickness.

    Really...
  4. Those O2 tubes are not small I would explore...

    Those O2 tubes are not small I would explore forming/molding the tube itself into the frame piece.

    It would be smaller, potentially more attractive.
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    It's not standard to anything - you'll have to...

    It's not standard to anything - you'll have to have one machined.
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    Ring gear on the window frame and electric motor...

    Ring gear on the window frame and electric motor with gear to rotate it.
  7. Yes, looks like homework... Been taught this...

    Yes, looks like homework...

    Been taught this equation?
    PV = nRT
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    It's not too uncommon for organizations that...

    It's not too uncommon for organizations that design and engineer non-life threatening products to employ non-formally educated designers and engineers.

    Your employer carries any liability that...
  9. Selecting Candidate Manufacturing Process

    Before serious engineering design effort is extended, there are a number of considerations driven by defined specifications of your end item that should be considered.


    Selecting the right...
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    Just study, you'll be fine..

    Just study, you'll be fine..
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    You will need to either model the frame in an...

    You will need to either model the frame in an analysis program or do the statics and dynamics load vs stress and strain calculation by hand.

    Here is an online 2D- Statics Analysis program.
    ...
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    Tap, fine thread specification, support O.D. in...

    Tap, fine thread specification, support O.D. in diameter fixture.
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    Use this calculator: ...

    Use this calculator:

    https://www.engineersedge.com/beam_bending/combined-stress-4.htm

    Set Fx = 0 determine the worst case stress at a and b use bolt with FOS at least 2X.
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    Here's the axial bolt force exerted by torque...

    Here's the axial bolt force exerted by torque calculator.

    https://www.engineersedge.com/calculators/torque_calc.htm

    Shear force/stress on pin or bolt.
    ...
  15. So, there's no contact between the wire and the...

    So, there's no contact between the wire and the part I suspect wire diameter is mostly about speed. I've personally seen a 64" wire EDM produced part with internal features. I believe RAM EDM can...
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    No, this is NOT your job. You are to verify that...

    No, this is NOT your job. You are to verify that the end part is manufactured to the specifications on the engineering drawing - nothing less, nothing more.



    The 3D step file should match the...
  17. Wire EDM would get you the geometry with the wall...

    Wire EDM would get you the geometry with the wall thicknesses you need however limited in effective lengths.

    https://www.engineersedge.com/edm.shtml
  18. Just how complex are these extrusions? Can you...

    Just how complex are these extrusions? Can you combine (spot weld, etc.) off-the-shelf extrusion shapes to simulate the geometry?

    Also, why would the extrusion need be unique - (yup, I have to...
  19. Do consider that the imperial (inches) system...

    Do consider that the imperial (inches) system requires matching significant figures for both limit, basic and expressed tolerance without leading zeros. For SI units (metric) there are no training...
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    Awesome..G:J

    Awesome..G:J
  21. I'm an engineering consultant and trainer in GD&T...

    I'm an engineering consultant and trainer in GD&T as well as DFM/DFMA.

    Usually a miss-match between the target manufacturing process and the limits of tolerance specified. Many organizations have...
  22. Both way are often used in the USA. The...

    Both way are often used in the USA. The tolerances should be based on the intended typical manufacturing process capabilities.

    In the rest of the world, they use ISO 286 part I and II OR ISO 2768...
  23. No... and I've seen a lot of engineering...

    No... and I've seen a lot of engineering drawings.

    Paragraph 3.3.16 Square Symbol ASME specification, the text does says " ... that a single dimension applies to a square shape shall...".

    Let's...
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    W is typically the total load or force applied, r...

    W is typically the total load or force applied, r might be radius, F is typically force, I agree C is unknown..

    You should consider just redoing the equations and calculations to be sure of what...
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    The best way to handle that is Engineers Edge...

    The best way to handle that is Engineers Edge "Static's 2D Modeler and Structural Loads Calculator"

    It's here: https://www.engineersedge.com/calculators/statics-modeler/statics-2d-modeling.htm
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