Introduction: Make a Cheap Spot Welder
How to diy a cheap spot welder
Step 1: We Will Remove Secondary Coils With a Hacksaw
01. 12V Relay Module External Trigger Delay Switch Time Adjustable
02. Button Switch
03. 0.15x8mm Nickel Plated Steel Sheet Strap Tape Strip For Battery Spot Welding
Step 2: We Will Add a Second Coil
I use the 70mm cable from old generator you can use other types welding cable. I recommend using a 35mm or more cable
Step 3: Box
I use old ATX psu for the box
Step 4: Timer - Switch - Welding Needle
You try to use other types but there is a note that you should select the timer can set the value is 0.1s. Because if your transformer is of great value long time can burn nickel.
I use a foot pedal from old motor bike. You can use a button as step 1.
03. Welding Needle
I use a needle of electrical soldering iron gun. There are many options for you
Step 5: Modular Design
I designed the module to avoid the wires.
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