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Type: Posts; User: Hudson

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  1. Replies
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    My review suggests the original post was...

    My review suggests the original post was manufactured by rolling - in self-pity. The material is probably snowflake.



    It is entirely possible that the interviewer was trying to be helpful...
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    Check out sonic welding. There is also some...

    Check out sonic welding.

    There is also some pretty good glue in the plumbing aisle.
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    force on pins

    The projecting pins will be pushed outward or inward by the mating holes.

    This force exerts a bending moment on the pins attempting to rotate them.

    The force also tries to move the pins away...
  4. Thread: No. of Holes

    by Hudson
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    295

    Multiply the pressure times the area inside the...

    Multiply the pressure times the area inside the gasket to get the force trying to push the cover off the valve. The total clamp load of the bolts should be several times this value. How many times...
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    You'd think it would work just fine as the...

    You'd think it would work just fine as the external pressure is only 1/10 of the rated internal pressure capacity.
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    Another option is a stepper motor. You have 12...

    Another option is a stepper motor. You have 12 Volts. You'll need, in addition to the motor, a driver that regulates D.C.direction and power to the motor coils to determine position and motion plus...
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    An observation: The holes on the smallest bolt...

    An observation: The holes on the smallest bolt circle are near the weakest part and none of the holes are aligned for manufacturing.
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    The deliberate misalignment of locating pins...

    The deliberate misalignment of locating pins creates an "interference fit".
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    Can you machine a 10mm hex on the end of the 12mm...

    Can you machine a 10mm hex on the end of the 12mm shaft and let maintenance use a socket wrench and extension?
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    A file or tiny grinder on a bottom edge would...

    A file or tiny grinder on a bottom edge would remove any plating and reveal the base material.
  11. You can inject steam heated water into the...

    You can inject steam heated water into the discharge side of the pump or perhaps use the steam alone to pump the water.

    steam engine boilers, especially on locomotives which did not recirculate...
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    Why not tolerance a wall thickness to the O.D....

    Why not tolerance a wall thickness to the O.D. that can be checked with a simple ball or tube micrometer instead of relying on CMM and inspection tables. Think like a machinist.
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    Do I see 'B' and 'C' datums as the edge of both a...

    Do I see 'B' and 'C' datums as the edge of both a 3" and an 8" square part? Then you call out parts to be centered?

    Why not make two bolt holes a common datum in the x & Y plane?
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    Sounds dangerous but, first determine if the...

    Sounds dangerous but, first determine if the floor can handle the load. If you have two 1 foot wide, seven foot long supports at the base and 21,000 lbs supported by them that's 1500 lbs/sq.ft if...
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    Consider a urethane adhesive for windshields. ...

    Consider a urethane adhesive for windshields.

    https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Auto-Glass-Urethane-Windshield-Adhesive/?N=5002385+3293242009&rt=rud
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    Are they multi-million dollar dies? Years ago,...

    Are they multi-million dollar dies? Years ago, when the earth was thought to be cooling, auto makers used a free machining, low melting alloy called Kirksite for fender dies.

    More recently,...
  17. You have a .002 cylindricity and a roundness call...

    You have a .002 cylindricity and a roundness call out. That seems like double dimensioning to me.

    Could you just call out a .005 cylindricity and a surface finish on the basic shaft diameter and...
  18. Look harder for 1" couplings. They should be...

    Look harder for 1" couplings. They should be less than a dollar for the PVC type.
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    .283 lbs/cubic inch

    .283 lbs/cubic inch
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    If you know the distance from one pivot to...

    If you know the distance from one pivot to another on the links, it is a simple triangle problem:


    With angle theta and the distance from the two base pivot points and the length of the link...
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    Take another look at the Parker catalog (fine...

    Take another look at the Parker catalog (fine folks they are) and see if you haven’t misread the volume as gallons when the actual figure is in liters (57).


    57L is more like 15 gallons or 2...
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    Much simpler to mold is a vortex spiral.

    Much simpler to mold is a vortex spiral.
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    1,538

    Regarding hydraulics, you cannot compress a...

    Regarding hydraulics, you cannot compress a liquid so your accumulator piston must work against some sort of spring like compressed air or steel. So the real energy storage is in the spring.

    ...
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    Confront the vendor and ask about the change in...

    Confront the vendor and ask about the change in finish.
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    You might look at a stepper motor and ball screw...

    You might look at a stepper motor and ball screw configuration that would be positioned under the table to provide linear force.

    Look for a 400 mm travel length linear stepper motor on Amazon. ...
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