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  1. My suggestion is to build one and test it. Or a...

    My suggestion is to build one and test it. Or a scale model if you are concerned about material used.
  2. OK, I can accept that orings can work for model...

    OK, I can accept that orings can work for model IC piston seals.

    What is the bore material? Not trying to closely fit an aluminum piston in an iron bore? Might be some thermal expansion seizure....
  3. If I understand, you propose using an elastomer...

    If I understand, you propose using an elastomer oring for piston combustion seal/oil control on an internal combustion engine?

    I doubt this will work. I would expect combustion temperatures to...
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    How about a couple steel straps around the tank...

    How about a couple steel straps around the tank to hold your pump and motor bracket in place?
  5. Thread: school me

    by strokersix
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    Plan your operations so the last two cuts each...

    Plan your operations so the last two cuts each side to size are climb cuts will give clean edges with minimal burrs.

    You have a challenge with stainless pipe. It may be sensitive to work...
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    How about a toolbox, modified as you need? Or...

    How about a toolbox, modified as you need?

    Or if you can build it from scratch has the advantage that you get exactly what you want. Subject to tools and materials available.
  7. OT but aluminum parts come out of the dishwasher...

    OT but aluminum parts come out of the dishwasher looking like they are anodized. I've done this several times for cast and wrought material. I am single.
  8. I don't know but I think tempered glass would be...

    I don't know but I think tempered glass would be the best choice if you want a window in your dishwasher. Salvage from a front load laundry machine? Might be able to get gasket and all from...
  9. To the OP. This thread got derailed and lost in...

    To the OP. This thread got derailed and lost in the details.

    Direct answer to your question: For typical threaded fasteners the torque/tension relationship is roughly: 40% of the torque goes to...
  10. Not going to fight. I tried to put into plain...

    Not going to fight. I tried to put into plain language and simple concepts to no avail.
  11. Rich, as a thought experiment, lets make a screw...

    Rich, as a thought experiment, lets make a screw with vee thread of 166 degrees (180-7-7, chosen for illustration) included angle instead of the typical 60 degrees. There is no way you will be able...
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    I would try heat straightening with a oxy fuel...

    I would try heat straightening with a oxy fuel torch before welding. More controllable and don't need to clean up after.
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    Seems a long way to get it done. Would not a...

    Seems a long way to get it done. Would not a steady rest have accomplished the task?
  14. Also, the thrust is taken somewhere resulting in...

    Also, the thrust is taken somewhere resulting in additional friction. Under head for a bolt, thrust bearings for a lead screw. This friction must be added.
  15. Agree with your analysis for a square thread. ...

    Agree with your analysis for a square thread. Vee thread will provide even greater "locking" effect.
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    How about an oxy/fuel torch? Look up heat...

    How about an oxy/fuel torch? Look up heat straightening. Such a gentle curve should be easily done I think.

    Is the material galvanized? Might need to clean off the zinc before heating or...
  17. Maybe for a very well lubricated system, ball...

    Maybe for a very well lubricated system, ball nut, ball thrust, etc. I bet the real friction loss is greater for a typical machine vise. If it was really only 15% the vise might not even stay...
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    This reminds me of an experience I had when I was...

    This reminds me of an experience I had when I was working for a large Ag OEM. Large weldment needed a pin bore done as last operation. Think a 4 inch diameter bore, say 10 inches long. I was in a...
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    Set your hot coffee mug on the shear table to...

    Set your hot coffee mug on the shear table to warm it and expand where it is too loose. Come back 10 min later and make your cut.
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    I think this is your easy solution. Or even a...

    I think this is your easy solution. Or even a vee notch with straight shears.
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    Unfamiliar with your shear but is there not an...

    Unfamiliar with your shear but is there not an adjustment available for clearance?
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    I'm going to say no. By thought experiment...

    I'm going to say no. By thought experiment consider a long skinny ellipse. True ellipse but nearly a line. Now do an offset. Result will be something very nearly a straight slot with round ends. ...
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    Hey, I'm a big fan of analog and mechanical stuff...

    Hey, I'm a big fan of analog and mechanical stuff but these days it sure is tough to justify with CNC readily available.
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    My grandfather built an ellipse router sometime...

    My grandfather built an ellipse router sometime around 1980. I now have the machine and it still works.

    Think of a "smoke grinder" or "do nothing machine" block of wood with two orthogonal...
  25. I've done some inline six chevrolet block deck...

    I've done some inline six chevrolet block deck surfacing on machines way way way too small. One tip is to use a hanging weight from a pulley on the ceiling to support the overhung workpiece.
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