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Type: Posts; User: dian

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  1. Replies
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    1,243

    i was a truck driver in the army and every...

    i was a truck driver in the army and every company had a mobile shop on a truck.

    see this, no idea if he could move it:

    YouTube
  2. Thread: sewer covers

    by dian
    Replies
    23
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    1,435

    corten steel and railroad steel are very...

    corten steel and railroad steel are very different. so some trace of copper (and nickel) make the cast iron not rust?
  3. Thread: sewer covers

    by dian
    Replies
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    1,435

    i know they are cast. but why dont they rust?

    i know they are cast. but why dont they rust?
  4. Thread: sewer covers

    by dian
    Replies
    23
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    1,435

    sewer covers

    covers and grids. what are they made of? i mainly wonder why they dont rust. they only get brownish.
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    1,348

    what precision do you want to achieve and how...

    what precision do you want to achieve and how does that match with you instruments? what grade is your plate and what grade the square (2, 1, 0, 00)?

    a cylinder square would be easy to make...
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    while visiting the reiden factory i saw they were...

    while visiting the reiden factory i saw they were delibetately scraping out of straight/parallel to alow for all kinds of sag.
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    817

    these tables are a bit weird. either the size and...

    these tables are a bit weird. either the size and number of fasterers are not mentioned or torque is given in units of pressure. well, 9-10 probably is for bench grinders. first row in 9-13: 30 kg/cm...
  8. are the brass "stripes" on the chuck still below...

    are the brass "stripes" on the chuck still below the surface?
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    739

    so there is no magnetic force pulling part down...

    so there is no magnetic force pulling part down at all?
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    surface grinding on three points

    this has been mentioned several times. how is it done? how high the shims? what surface area? plain steel or magnetic?
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    https://www.tribology-abc.com/calculators/e2_1.htm...

    https://www.tribology-abc.com/calculators/e2_1.htm

    what does "indentation" mean? is it assumed the ball doesnt deform? and if you have two balls?
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    1,432

    0.01"? really? how much do you retract?

    0.01"? really? how much do you retract?
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    432

    thin slitting saw will work without key, provided...

    thin slitting saw will work without key, provided direction is right in relation to nut.
  14. so what do you use the sc wheels for? cast?

    so what do you use the sc wheels for? cast?
  15. i grind hss with those diamond discs all the...

    i grind hss with those diamond discs all the time. maybe they dont last that long, but who cares? (its a question of temperature.)
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    thats actually interesting. why do they then make...

    thats actually interesting. why do they then make cages from chrome moly?
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    2,016

    anfifreeze will indeed soften epoxy. but will not...

    anfifreeze will indeed soften epoxy. but will not dissolve it. no idea if all products are the same.
  18. Replies
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    surface finish and magnetic attraction

    apparently surface finish has a noticeable impact on how well a magnet sticks. is there any data available on this? (should i polish the chuck on the grinder?)
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    62,997

    what would be a typical adiabatic efficiency for...

    what would be a typical adiabatic efficiency for these blowers?
  20. Replies
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    757

    speedy sleeve.

    speedy sleeve.
  21. i cut two slots and now it stays flat.

    i cut two slots and now it stays flat.
  22. Replies
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    i has come to my attention recently, that there...

    i has come to my attention recently, that there is a u.s. patent on the multifix. i thought it might be of interest.

    US2428508A - Toolholder appliance for lathes
    - Google Patents
  23. Replies
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    1,104

    insert is not supposed to be level.

    insert is not supposed to be level.
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    2,118

    there is about a dozen additives in atf, but its...

    there is about a dozen additives in atf, but its still oil, mineral oil mostly, right?
  25. he switched the gears around.

    he switched the gears around.
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