What Material to make a flux core nozzle?
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  1. #1
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    What Material to make a flux core nozzle?

    I want to make a nozzle for flux core, only because I have a Smithy Midas 1220LTD lathe-mill-drill and no current projects for it. So it basically just "something to do" to practice/learn machining. So the question is: what material should I be looking at? I've seen some that are a hard black plastic, but I have no idea what it could be. Is brass an alternative?
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  2. #2
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    Re: What Material to make a flux core nozzle?

    All i know is nozzles are made from copper

  3. #3
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    Re: What Material to make a flux core nozzle?

    Mist are some type of plastic. Chemical formed not thermoformed for obvious reasons
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  4. #4
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    Re: What Material to make a flux core nozzle?

    I just cut down an old nozzle. Leave enough to protect threads if it's a threaded nozzle. On a Bernard gun, the nozzle holds the tip, so that's about the only way for it to work.

  5. #5
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    Re: What Material to make a flux core nozzle?

    The store boughts just slowly burn or crumble away, not melt. When you drill or grind them it's more of a dust than shavings. I've wondered what they were made out of. Can't get one for the magnum 250 gun, so I just buy the tweco one and modify that for the bigger gun. Falls short of what I want but the best I can do for now.
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  6. #6
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    Re: What Material to make a flux core nozzle?

    It's only purpose is to keep stuff out of the gas collet and liner so just plug the holes and nozzle gel the tip. Welding blanket wrap seems like it would work, muffler tape.
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  7. #7
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    Re: What Material to make a flux core nozzle?

    Quote Originally Posted by One1 View Post
    It's only purpose is to keep stuff out of the gas collet and liner so just plug the holes and nozzle gel the tip. Welding blanket wrap seems like it would work, muffler tape.
    For me it serves as a bump guard, electrical insulation.
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  8. #8
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    Re: What Material to make a flux core nozzle?

    You dont need a nozzle for flux core but teflon may work and is machinable.

    EDIT: I see muffler tape was already mentioned.
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  9. #9
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    Re: What Material to make a flux core nozzle?

    Quote Originally Posted by duramax-rob View Post
    All i know is nozzles are made from copper
    Thanks Rob, but not all nozzles are made from copper.


    I know it is not absolutely necessary to use a nozzle for flux core. I know you guys are welders by trade and are probably thinking along the lines of "just do what is needed to get it done, and nothing else". I'm not thinking along those lines at all. From my original post, " it's basically just "something to do" to practice/learn machining."

    Quote Originally Posted by Sandy View Post
    The store boughts just slowly burn or crumble away, not melt. When you drill or grind them it's more of a dust than shavings. I've wondered what they were made out of. Can't get one for the magnum 250 gun, so I just buy the tweco one and modify that for the bigger gun. Falls short of what I want but the best I can do for now.
    I agree. I'm thinking a brass one would be cool to have.
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  10. #10
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    Re: What Material to make a flux core nozzle?

    What little self shielded flux core wire I’ve run. I don’t like the nozzles! Especially when doing overhead! I like the thread protectors much more. The splatter doesn’t land on the thread protectors, like it does on the nozzles.
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  11. #11
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    Re: What Material to make a flux core nozzle?

    Quote Originally Posted by CEP View Post
    What little self shielded flux core wire I’ve run. I don’t like the nozzles! Especially when doing overhead! I like the thread protectors much more. The splatter doesn’t land on the thread protectors, like it does on the nozzles.
    Good for you, it just doesn't help me, LOL. I've been recommended PTFE or PEEK if wanting to go the plastic route. Sounds easy enough.
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  12. #12
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    Re: What Material to make a flux core nozzle?

    There are some very high-temp plastics listed in this brochure, such as Torlon, Celazole, Vespel and Fluorosint. https://www.professionalplastics.com...rochure_04.pdf
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  13. #13
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    Re: What Material to make a flux core nozzle?

    Figure out a way to get a tig cup on there.
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  14. #14
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    Re: What Material to make a flux core nozzle?

    Oscar...go with copper, and machine it to the shape of the plastic ones...should be a good project
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  15. #15
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    Re: What Material to make a flux core nozzle?

    Cut the pinky finger off an old leather glove and twist a couple inches of mig wire around it with a decent pair of pliers. Gawd.... it aint that hard.Your mission is keeping the the threads( or sleeve---Miller) from gertting f'upped. that's all.

  16. #16
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    Re: What Material to make a flux core nozzle?


    Oscar


    Quote Originally Posted by Oscar View Post
    I want to make . . . only because I have a Smithy Midas 1220LTD lathe-mill-drill
    and no current projects for it . . .

    "something to do" to practice/learn machining . . . I've seen some that are a hard
    black plastic, but I have no idea what it could be. Is brass an alternative?
    Forget brass - unless you are fashioning a 'brass final product' - it machines well,
    but is generally unweldable, and is a poor backing plate for filling holes.

    Brass is great - for 'Lamp Shape Finials' - and little/nothing more . . .

    The 'Hard Black Plastic' is likely Acetal [aka Delrin, T-, U-, C-] also available in white.
    http://www.google.com/search?client=...UTF-8&oe=UTF-8

    Delrin is produced in a wide variety of flat thicknesses, and round-stock diameters.

    Delrin's machinability is magic - it turns, mills, to a mirror finish - and drills and taps
    without 'the hole closing' like other plastics. It is also an insulator.

    Compared to brass/copper Delrin is affordable - but not cheap - your local [regional]
    supplier should have a 'drop table'. With few exceptions - the drop selection has
    always met my requirements.

    If you are just learning to: mill, turn, and drill - Delrin's greatest benefit - is it's ease,
    and forgiveness with machine tooling [lathe cutters & drill bits].

    In short - cheat the learning curve - start with Delrin, graduate to Aluminum, then
    shift to steel . . .


    Opus

  17. #17
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    Re: What Material to make a flux core nozzle?

    Quote Originally Posted by CEP View Post
    What little self shielded flux core wire I’ve run. I don’t like the nozzles! Especially when doing overhead! I like the thread protectors much more. The splatter doesn’t land on the thread protectors, like it does on the nozzles.
    that bushing is the same setup i used to run innershield.
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  18. #18
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    What Material to make a flux core nozzle?

    I think Opus nailed it...

    I have a stick of Delrin and it looks identical to the flux nozzle on my little Lincoln.



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  19. #19
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    Re: What Material to make a flux core nozzle?

    Oscar,
    shoot me a PM with your address if you want to give it a go.

    it's been taking up space under the work bench since I sold my lathe....
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  20. #20
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    Re: What Material to make a flux core nozzle?

    Quote Originally Posted by OPUS FERRO View Post

    Oscar




    Forget brass - unless you are fashioning a 'brass final product' - it machines well,
    but is generally unweldable, and is a poor backing plate for filling holes.

    Brass is great - for 'Lamp Shape Finials' - and little/nothing more . . .

    The 'Hard Black Plastic' is likely Acetal [aka Delrin, T-, U-, C-] also available in white.
    http://www.google.com/search?client=...UTF-8&oe=UTF-8

    Delrin is produced in a wide variety of flat thicknesses, and round-stock diameters.

    Delrin's machinability is magic - it turns, mills, to a mirror finish - and drills and taps
    without 'the hole closing' like other plastics. It is also an insulator.

    Compared to brass/copper Delrin is affordable - but not cheap - your local [regional]
    supplier should have a 'drop table'. With few exceptions - the drop selection has
    always met my requirements.

    If you are just learning to: mill, turn, and drill - Delrin's greatest benefit - is it's ease,
    and forgiveness with machine tooling [lathe cutters & drill bits].

    In short - cheat the learning curve - start with Delrin, graduate to Aluminum, then
    shift to steel . . .


    Opus
    Holy **** … that's the best post I've ever seen from Opus.... if the world isn't coming to an end, there's hope for us all!
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