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  1. " I have a half of a vidmar drawer of tap holding...

    " I have a half of a vidmar drawer of tap holding devices and think every machinist should. "

    Ain't that the truth. Adjustable T handles from 0-80 to 1/2", 3 adjustable ratcheting T handles, tap...
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    32
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    1,518

    What about a drill-tap in a tapping arm? You...

    What about a drill-tap in a tapping arm? You would have to set up the foot to be parallel to the floor, but the tapping arm would then ensure that the drill-tap was perpendicular to the foot. It...
  3. I was always impressed by this one, first seen...

    I was always impressed by this one, first seen here on PM. Not exactly a jig, but a two axis hydraulic tracer vertical mill is pretty clever.
    301946

    The high resolution version original version...
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    1,208

    I used to work at a plant that used -90F...

    I used to work at a plant that used -90F refrigeration to recover evaporated solvents from a recirculating air loop. We had huge air to air heat exchangers (2x12 foot inlet and outlet, 14 feet high,3...
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    830

    I agree with Digger, we had a nice one at the...

    I agree with Digger, we had a nice one at the tool thrift shop. It moved in a couple of days, and I think the price was $125.
  6. Three words. Open end wrench.

    Three words.

    Open end wrench.
  7. Replies
    30
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    1,112

    When my house was built, the original owner...

    When my house was built, the original owner installed a transfer switch between utility power and a plug hanging out of the switch. I have a late 90s Coleman brand 6500 watt generator. I've used...
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    945

    $10,000 shipping.

    $10,000 shipping.
  9. Not only has the frequency of ads increased,...

    Not only has the frequency of ads increased, somehow they have decided that I am fluent in Spanish as well. A percentage of the ads presented are now in Spanish.

    There's nothing more useless to an...
  10. Replies
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    2,369

    Why counter rotating? In addition to thrust, the...

    Why counter rotating? In addition to thrust, the rotation of the propeller creates a lateral force and a torque on the boat. By using counter rotating propellers, these forces are balanced and the...
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    928

    Old WP Davis Lathe in Rochester NY

    I volunteer at a used tool store that receives donations and resells the tools to benefit a charity. We recently had someone offer us a lathe, but have decided that it is too large for us (amateurs)...
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    1,739

    Very heavy waxed cord can be found at your local...

    Very heavy waxed cord can be found at your local shoe repair store. It's what I've used on my SB 10K underdrive lathe, where you have to cut the belt or pull the spindle.
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    698

    I was doing the opposite(I wanted the 1/2"...

    I was doing the opposite(I wanted the 1/2" square). I bought a Harbor Freight impact socket and it parted off perfectly using HSS on a South Bend. The impact sockets in general are softer so they...
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    1,069

    With a little bit of 3d printing, I'd bet a...

    With a little bit of 3d printing, I'd bet a pipeline style could be fit very nicely.
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    22
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    1,009

    9/16-18 is a standard inch thread. 9/16 is...

    9/16-18 is a standard inch thread. 9/16 is 14.29mm, so a 95% thread would be 13.46mm. 18 TPI would be a thread pitch of 1.41mm, very close to your 1.5mm pitch. I'm not sure you could see that with...
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    420

    Unusual Small Collets

    I've previously posted some of the things that we've seen at the Tool Thrift Shop where I volunteer. We have a couple of things that were donated that I need help with.

    The first are these small...
  17. I was curious, so I did a little looking into...

    I was curious, so I did a little looking into Behr's. The BBB site came up with one in Dayton, OH. A number of recent unhappy campers.
    ...
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    132
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    5,306

    I don't recall where I saw it, but I did visit a...

    I don't recall where I saw it, but I did visit a forum where you could not sell until you had 50 posts. That seems to be a reasonable number, as even newbies can reach that in a few months if they...
  19. Replies
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    1,017

    Could you drop a screw in the hole when you flip...

    Could you drop a screw in the hole when you flip it?
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    1,050

    There's something funny if you can level a...

    There's something funny if you can level a .0001'/ft level with paper, which is in the neighborhood of .004". Aluminum foil will get you into the .00063" thickness per layer range as long as you keep...
  21. My brother hauled a Grob NS-18 about 400 miles...

    My brother hauled a Grob NS-18 about 400 miles from NH to western NY for me using a u-haul 5x9 Utility Trailer Rental with Ramp. The NS-18 is about 1500lbs, the trailer is rated for 1650, and the...
  22. We used to clean up shovels with concrete on them...

    We used to clean up shovels with concrete on them by soaking in a bucket of cheap vinegar. Don't know how it would work on non-shrink grout.
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    1,317

    Worst Chuck Jaw Grinding Technique Yet

    If this wasn't from the third world I'd think it was a joke.

    Hadri Engr's technique for grinding the jaws while tensioned is to close the chuck on a short piece of pipe, TACK WELD the jaws to...
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    4
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    981

    @messar, what is the problem with x-raying CuW? ...

    @messar, what is the problem with x-raying CuW? Secondary emission from the tungsten?
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    29,220

    I don't usually chime in on political stuff as I...

    I don't usually chime in on political stuff as I don't believe it is the purpose of this site, but PeteM, you have to look beyond what the major news outlets are showing and look at the long videos...
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