3$ Spot Welder Electrode Holders




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The goal of this ible is to show you how to make an electrode holder tip for your spot welder for under 3$

Giveaway: follow my instructables and YouTube channels and post an "I've made it" picture to get the free pro membership voucher I got when this instructables was featured.

Step 1: Material

For this, you will need

Step 2: Drill the Back Hole

The first hole you want to make is the 13/32th hole in the back.

Step 3: Solder the Wire In

If you make the other holes now, you will have a to redo part of it as the solder will run into the other holes. If you make your holes shallow enough, you can drill them all before, as long as the back does not connect with the pinching screw's hole or the electrode's hole... Either you get ease of clamping, or ease of depth gauging.

Step 4: Drill Some More

Drill the side 1/8th hole for the 8-32 finger screw that will hold the electrode, and the the 7/32 hole from the tip inwards.

Step 5: Tap Your 1/8th Hole

Tap the hole for the finger screw to actually screw in, and that's it, you are done. Everything is ready for your use.

Step 6: Finishing Touch

You can also add some shrink tube to the whole thing. It serves to prevent accidental contact, but also colour codes your cables so you know what is plugged where.

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    5 Discussions


    2 years ago

    tidy work sir. might i ask would u be better served to have made off the black negative conductor with an alligator/spring clamp to better earth your intended work piece ? Or have i missed something. otherwise great stuff. i will make one to be used with 2 or 3 12vdc 80Ahr Deep Cycle batts i have spare.

    2 replies

    Reply 2 years ago

    For brazing a clamp is certainly better, but for spot welding, I wanted to be able to apply the current in an accurate and localized manner on small work piece.


    3 years ago

    I totally understand what you were doing and why you used brass pins for the spot welding electrodes instead of steel. However, You should have shown them in use for others to get a better idea what you made and how there are used. What are you using for the supply voltage/current source and what are you spot welding with them. Thumbs Up!

    1 reply

    Reply 2 years ago

    Hehe, you are two steps ahead of me! It is indeed for a spot welder, and I am currently working on an ible for the DIY <1$ lug connectors, after which I will post the spot welder. I decided to break it down because lug connectors are used for so much more than spot welding, and from there I figured that there are probably other uses to this kind of holder as well, especially if it is scaled larger. The lug connector ible is on its way already, but the spot welder is still awaiting a last part (looking for a solenoid that is rated high enough, the cheap ones I have found so far are only 80A). As for the power source, I am using a very unorthodox one... lithium batteries. I know, I know, it sounds crazy and dangerous... you can check out my other ible on that topic https://www.instructables.com/id/Make-Lithium-Battery-Pack-From-Salvage/ :p