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Thread: Aid for spot Welder tips

  1. #1
    Supporting Member garage nut's Avatar
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    Aid for spot Welder tips

    The control module arrived for my Microwave spotwelder, but the MG has been more of a priority due to the nice warm weather. The leatherette can be left in the sun to soften and then very easy to work with, but I have been struggling with one particular application and then I have found best is to change my focus and come back to it later and usually I find a work around.

    I decided after looking at many YouTube clips I want off center welding tips then by rotation them I can vary the distance between the tips. The main use for this spotwelder will be to create 18650 battery packs. I do not have a 4 jaw chuck so the next best is to drill an off ceter hole in a piece of rod and to clamp the copper in this hole and then to spin the whole lot in the lathe to create my off center tips.

    Found a small piece of 22mm bar in the scrap bin and the copper rod I was planning on using for the tips was 6mm in diameter. The calculations showed a 13mm off set from the side of the bar will leave me with a 2mm tip. All the machining on the holder has to be done in the mill.

    Aid for spot Welder tips-aaa1.jpg Aid for spot Welder tips-aaa2.jpg

    Learning points....

    Don't be afraid to let rip with the rpms.
    standard carbide tips not the best for cutting copper, you can see I used a "sharp" insert.
    Can not cut the copper with much more than 8mm protruding from the holder.

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  2. The Following 4 Users Say Thank You to garage nut For This Useful Post:

    bigtrev8xl (Apr 21, 2020), Jon (Apr 23, 2020), sossol (Apr 20, 2020), Tule (Apr 21, 2020)

  3. #2
    Supporting Member garage nut's Avatar
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    This is an alternative way to sharpen the tips and still end up with an off set (to be used to distance the tips from one another) and a 1mm welding tip.

    Perhaps the welding experts can comment on which shape of tip will be the best for the job?

    Aid for spot Welder tips-aaa3.jpg Aid for spot Welder tips-aaa4.jpg

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    Thanks garage nut! We've added your Welding Tip Tool to our Welding category,
    as well as to your builder page: garage nut's Homemade Tools. Your receipt:






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