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Cut my first thread on a lathe

Discussion in 'Off Topic' started by idahoan, Feb 19, 2014.

  1. idahoan

    idahoan Boise, Idaho Active Member

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    I have done tons of fabricating, milling, you name it, but threading (not with a tap and die set) was always voodoo to me. Well for christmas my wife got me a 7x16 lathe and I cut my first thread tonight.

    I feel like a "real" machinist, lol.
     
  2. rick benjamin

    rick benjamin USA, Or, Damascus Secure the drama Silver Supporter 2016 Volunteer

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    Hidyhoahan,
    Good work!
     
  3. robertg

    robertg Sandy Oregon Silver Supporter Silver Supporter 2016 Volunteer

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    What kind of lathe is it?
     
  4. idahoan

    idahoan Boise, Idaho Active Member

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    Micromark 7x16, its basically the cadillac of the chinese lathes, I looked for close to two years for an older american lathe that wasn't ragged out but every one that I came across they either wanted new lathe prices, or it was in need of serious refurbing.
     
  5. bellarum

    bellarum beaverton Well-Known Member

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    Super sweet! I did some barrel fluting when I was a kid on my dads Bridgeport mill. He set it up, but I loved doing that stuff back then!Enjoy! post some pics!
     
  6. robertg

    robertg Sandy Oregon Silver Supporter Silver Supporter 2016 Volunteer

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    Nice, look for used tooling, you can save some money that way.
    Have fun.
     
  7. deadeye

    deadeye Albany,OR. Moderator Staff Member

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    They used to teach that in High School metal shop back when schools still had industrial arts. I wish I had some of the machines we used they probably sold them off cheap years ago.
     
  8. idahoan

    idahoan Boise, Idaho Active Member

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    lol its just a barrel thread protector. I have been learning how to cut my own tooling out of tool steel which is pretty cool cuz its only $8 a foot for 3/8 tool steel. I wish I had the metal lathe that my grandfather had but he died when I was a kid and no one in the family would help me move it. I think it was an early 1900's Hendey. Went to the scrap yard :( . I learned on that lathe but he never taught me thread cutting.
     
  9. Nickb

    Nickb Moxee Active Member

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    Good job, how did you check it? Mating part or measure over 3wires?
    If you really want to tinker cut a multiple lead thread... Then a nut to go on it.
    (It's actually pretty simple to do, they just look cool)
    These aren't mine but here is an example.
    09d54356872e90313c7b23824058a129_zps1c963e80.jpg
     
  10. idahoan

    idahoan Boise, Idaho Active Member

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    I just checked it on my barrel and it fit pretty well, a little tighter than I would like but it threaded all the way on.

    those do look pretty cool BTW. Do you just start on a differnt point at the thread dial?
     
  11. Velzey

    Velzey Estacada, Oregon Gunsmith Gunsmith Bronze Vendor Bronze Supporter

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    Yep just pick the 1/3 2/4 on the dial and away you go. Multi lead acme are fun, small cuts and lots of oil, makes nice threads.

    I picked this lathe up a few years ago! Complete with a taper attachement.
     
  12. 1990Turbo

    1990Turbo St.Helens Active Member

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    I did an internal left hand acme with a hand ground tool that was fun. I have 2 cnc lathes at my disposal now makes threading so much easier and faster. Its like cheating
     
  13. Martini_Up

    Martini_Up NW USA Well-Known Member

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    I miss metal shop - welding, forge, lathe, press, etc.... small wonder we have become a service society with free-falling debt. Schools no longer teach anything worth anything!
     
  14. Nickb

    Nickb Moxee Active Member

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    For the multi start threads I always ran my compound parallel to the z. When I learned I did a 4 start thread, machine was set to 10tpi, I cut a couple passes with the compound at 0, moved the compound .025 ( 1/10=.1, divide that by 4, #of starts) take a couple of passes then move the compound to .05, .075 then .100. Then start all over at 0.

    I haven't cut threads on a manual lathe for 5 or 6 years. I have cnc's to do my work now.
     
  15. CounterOfBeans

    CounterOfBeans northwest Active Member

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    Nice stuff guys. Wish I had the equipment to play in that sandbox. I'll just live vicariously through you for now.
     
    skydiver and (deleted member) like this.
  16. idahoan

    idahoan Boise, Idaho Active Member

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    Oh thats a very nice lathe Velzey here is a pic of the one I have 84631_R.jpg

    84631_R.jpg