Longevity Model 100 Mig
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  1. #1
    Join Date
    Nov 2015
    Location
    Central Missouri
    Posts
    51

    Longevity Model 100 Mig

    About 4 years ago I purchased this Longevity Model 100 mig welder.Yes it is the least expensive however before purchasing something further up the ladder I wanted to see if I enjoyed welding.First I made myself a welding table.Next a cart to tote it around my garage. It has performed well and I will say that my flux core welds have improved greatly.However, I was welding a muffler and the end of the wire coming out of the handle was hot.I cannot remember for the life of me if the stick out is supposed to be hot all the time.This has me puzzled. I dismantled the handle and found a red and blue wire.They run to the wire feed motor. Nothing else. It still welds good for an inexpensive unit.Anyway I just thought that someone could put my mind at ease.Thanks, Ken BTW, I have since elevated to using a Lincoln Pro 140 Mig with gas.

  2. #2
    Join Date
    Jan 2016
    Posts
    2,508

    Re: Longevity Model 100 Mig

    call longevity service and ask them, thats what they are for, if they even know..lol

  3. #3
    Join Date
    Nov 2015
    Location
    Central Missouri
    Posts
    51

    Re: Longevity Model 100 Mig

    Hobb, So I took your advice and called Longevity.So after he looked it up, I was told that this is the way that it was designed. Nothing wrong with it. I could have sworn that when I released the trigger it stopped the current to the wire. Thanks for your reply. BTW,It still welds great for an inexpensive flux core welder.Ken

  4. #4
    Join Date
    Feb 2009
    Location
    Chicago
    Posts
    6,107

    Re: Longevity Model 100 Mig

    Earlier model harbor freights were the same way, the lead was always hot. Your model looks similar so I would assume it's normal.
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  5. #5
    Join Date
    Nov 2015
    Location
    Central Missouri
    Posts
    51

    Re: Longevity Model 100 Mig

    Yes I have read about this topic being always hot. The first thing that I did was replace the ground clamp. The wire feed works great. I have put about 4 spools of wire .030 through it.

    https://www.homedepot.com/p/Longevit...0130/205219111
    Last edited by Kenskip1; 06-01-2018 at 05:23 PM.

  6. #6
    Join Date
    Jan 2016
    Posts
    2,508

    Re: Longevity Model 100 Mig

    Quote Originally Posted by Kenskip1 View Post
    Hobb, So I took your advice and called Longevity.So after he looked it up, I was told that this is the way that it was designed. Nothing wrong with it. I could have sworn that when I released the trigger it stopped the current to the wire. Thanks for your reply. BTW,It still welds great for an inexpensive flux core welder.Ken
    glad you got your answer, most times I goto the source( manufacture) to find out a technical question..I would hope they know since they designed and built it, that goes for all brands...

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