Introduction: 3$ Spot Welder Electrode Holders
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
- 3/8 brass plumbing end plug (size can vary if you are making a larger device)
- 13/32 (or 7/16), 7/32, and 1/8 bits
- all my measurements assume this is going on a 1 AWG cord. By all means, adjust for your cord and electrode size
- 8-32 knurled brass bolt
- 8-32 tap
- AWG 10 single core copper wire
- soldering torch
- solder with rosin core, try to go lead free
- some shrink tube. You will need a few sizes to cover all the parts,s o make sure you have large enough ones.
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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