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  1. Replies
    16
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    840

    My Unimat DB-200, the original, not the SL, came...

    My Unimat DB-200, the original, not the SL, came with an Emco 1/4" chuck that goes down to about 0.020". It has a metric thread mount, M12 x 1.0. I have used it with drills smaller than #60 on a...
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    15
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    924

    McMaster does list 0.035" shim stock. In...

    McMaster does list 0.035" shim stock. In addition, you say the local places weren't interested in grinding 18 ga (.048) down to .035. But you can get 0.040 shim stock from McMaster. Would they...
  3. Replies
    14
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    797

    The underline on "Chilton manual" is mine. I will...

    The underline on "Chilton manual" is mine. I will bet that manual does not say where those numbers come from. Ford? Did they SAY that is a FORD spec? I doubt it. Or did they just measure two or three...
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    597

    I posted some instructions on posting photos...

    I posted some instructions on posting photos here:

    https://www.practicalmachinist.com/vb/images-and-links/using-boards-image-hosting-350499/#post3176881

    There are other methods, but that will...
  5. Replies
    67
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    10,622

    Iron, steel, and copper has been mentioned. What...

    Iron, steel, and copper has been mentioned. What about aluminum. It is a good conductor of heat and probably less expensive than copper.
  6. Replies
    67
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    10,622

    Air flowing up and water flowing down would be...

    Air flowing up and water flowing down would be best.
  7. Replies
    67
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    10,622

    That is a design that I would have avoided like...

    That is a design that I would have avoided like the plague in any of my compressed air systems. Each and every loop there will fill up with water on the bottom side. So your air will pass through not...
  8. Replies
    30
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    2,206

    It seems that you can get it. But if you are...

    It seems that you can get it. But if you are really intent on making it from round tube, I would make some comments. Full disclosure: I have never done anything like this and probably never will.
    ...
  9. I try to avoid places with a HR lady. Never seen...

    I try to avoid places with a HR lady. Never seen one that I liked or could work with. But, I have been mostly unsuccessful at that. If she asked any really dumb questions, like "What is your biggest...
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    818

    Here is another approach that works with the idea...

    Here is another approach that works with the idea of acceptable error. Again, I am assuming that you have a 40::1 worm. Your 63 hole circle will provide the finest divisions of any of the ones you...
  11. Replies
    14
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    818

    Angular dividing is all about prime numbers....

    Angular dividing is all about prime numbers. Somewhere in your worm gear and hole plate you need ALL of the prime numbers in your desired division. 39 is a composit number and contains the prime...
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    957

    Nothing in this whole mess is perfect. You can't...

    Nothing in this whole mess is perfect. You can't just apply formulae to the nominal sizes. I am totally aware of Schedule 160 and XXH which is even heavier. But the system appears to be based on the...
  13. Replies
    16
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    957

    The logic behind pipe dimensions depends on two...

    The logic behind pipe dimensions depends on two factors. First, the inside diameter is used as the nominal pipe size because that determines how large the flow rate can be. And second, the threads on...
  14. Replies
    23
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    1,437

    My RT has a MT center hole so a MT adapter will...

    My RT has a MT center hole so a MT adapter will self center in it. Weather by good luck or good planning, my lathe has the same MT in the headstock spindle. So I find that I can machine an unhardened...
  15. Replies
    44
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    1,647

    You say that one wire is yellow-green, but I do...

    You say that one wire is yellow-green, but I do not see any green in the single photo that you have posted. Yellow is a perfectly good color for a HOT wire. So, I have to wonder. Three phase wiring...
  16. Replies
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    928

    Most scanners can do it. If you are going to...

    Most scanners can do it.

    If you are going to do it yourself you need to be aware of some things. They make devices with mirrors in them to backlight the negative as you need the light to go...
  17. Never mind, I see that you already tried it...

    Never mind, I see that you already tried it without a converter. Perhaps just use a simple amplifier module?
  18. Replies
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    1,285

    Well, YES that is also true. Task Manager should...

    Well, YES that is also true. Task Manager should be safe.
  19. You asked for alternatives so here goes. When...

    You asked for alternatives so here goes.

    When I was growing up in New Orleans (heat, humidity to the max), before air conditioning, we had a whole house ventilation fan installed in a central...
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    1,285

    NEVER EVER, NEVER, NEVER, NEVER EVER click on a...

    NEVER EVER, NEVER, NEVER, NEVER EVER click on a pop-up. A pop up can do anything and you have absolutely no idea who sent it or what it will do.

    If you want to update Firefox, just go to the...
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    956

    I am no way near being a gear expert or even a...

    I am no way near being a gear expert or even a good amateur, but a sideways thought came to me while reading this. The biggies in the auto world have faced this problem and have solved it. They make...
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    977

    I have been in LA traffic and in Houston traffic....

    I have been in LA traffic and in Houston traffic. A trip across LA is ten times worse than a trip to Houston. I did not go from Beaumont to Houston to look for my milling vises and I certainly would...
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    I'm also in Beaumont; have been for several...

    I'm also in Beaumont; have been for several decades. I do not know of any local places other than HF and Northern Tools. Neither of them have Kurt or other brands of quality milling vises in stock. I...
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    Thanks Marcus.

    Thanks Marcus.
  25. Replies
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    1,098

    A true bevel gear, which eminates from a single...

    A true bevel gear, which eminates from a single common point, will have a cross section with true, involute faces at all points from the inner end of the teeth to the outer end. This is not easy to...
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