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    Time to make some threads

    ChrisJ
    ChrisJ Member Posts: 16,583
    in THE MAIN WALL
    Due to issues with burrs on the last units we made I'm going to be milling some female 1/8" NPT threads in 316SS soon.

    The things I like about thread milling is if a break the threadmill off it simply falls out of the hole.  I can also adjust it so my threads fit a specific part perfectly with little to no slop.  When done right and compared I feel it makes tapped threads feel pretty terrible.


    This will be my first time doing NPT threads with one.




    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

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    Comments

    • mattmia2
      mattmia2 Member Posts: 12,364
      So does the part need to rotate and move up and down the pitch of the thread as it rotates?
    • ChrisJ
      ChrisJ Member Posts: 16,583
      mattmia2 said:
      So does the part need to rotate and move up and down the pitch of the thread as it rotates?
      On my machine the part moves in X and Y and the tool spins and moves in Z (vertical).

      I'm going to try and take a video of it in the next few days.

      I've done a lot of normal threads but this will be my first time milling npt threads

      Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

    • ratio
      ratio Member Posts: 3,955
      ChrisJ said:

      show previous quotes
      Does that mean that the tool rotates around the work, or am I misunderstanding?
    • ChrisJ
      ChrisJ Member Posts: 16,583
      ratio said:
      show previous quotes
      The tool spins like a drill bit and moves up and down and the part  moves around horizontally.

      Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

    • ChrisJ
      ChrisJ Member Posts: 16,583
      This video shows how it works.

      https://youtu.be/rDnavOlGcdc

      Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

      CanuckerSolid_Fuel_Man
    • ratio
      ratio Member Posts: 3,955
      That's awesome. Do you use it to make male threads too?
    • ChrisJ
      ChrisJ Member Posts: 16,583
      ratio said:
      That's awesome. Do you use it to make male threads too?
      Yessir.

      Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

    • hot_rod
      hot_rod Member Posts: 24,881
      great animation!
      Bob "hot rod" Rohr
      trainer for Caleffi NA
      Living the hydronic dream
    • mattmia2
      mattmia2 Member Posts: 12,364
      without a cnc mill you would need a mill that was pretty much just built for thread cutting.
      CLamb
    • Lard
      Lard Member Posts: 115
      I have been using a high-performance two-flute PCD (diamond) threadmill at work.  M24x1.25 inside threads in aluminum in about one second.  18,000 RPM and .3mm/rev (automotive left the inch system long long ago) Up to this point all I have used is been plain ‘ol Emuge carbide.

      Love the remark about how a broken threadmill just falls out. The threads are still usually junk, but broken taps=sadness.  Broken spindles = even more sadness.  G0 does not a G1 make.
    • EdTheHeaterMan
      EdTheHeaterMan Member Posts: 10,353
      I really enjoyed reading this THREAD! or is this a POST? maybe a discussion?

      I'll call it a Thread, mainly for the content

      Edward Young Retired

      After you make that expensive repair and you still have the same problem, What will you check next?

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