Cheap Mig Flux Core Welder Mods
by AGwheelsports in Circuits > Soldering
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Cheap Mig Flux Core Welder Mods
![IMG_20201208_034156.jpg](/proxy/?url=https://content.instructables.com/FYD/GFXU/KIEKHR6O/FYDGFXUKIEKHR6O.jpg&filename=IMG_20201208_034156.jpg)
![IMG_20201208_034212.jpg](/proxy/?url=https://content.instructables.com/F56/5QFL/KIEKHR6N/F565QFLKIEKHR6N.jpg&filename=IMG_20201208_034212.jpg)
![IMG_20201208_034254.jpg](/proxy/?url=https://content.instructables.com/F4M/W2VS/KIEKHR8X/F4MW2VSKIEKHR8X.jpg&filename=IMG_20201208_034254.jpg)
Hi, everyone
My hobby is basically building vehicles with wheels, but in the middle of all, I must do another things to reach my goals, and it seems that several people like those things, here are one of that: ___________________________________________________________________________
This was a simple mod on a cheap MIG flux cored welder to make it work like a decent MIG welder
The steps are upload in youtube if you want to see how it´s made.
Here leave the electric diagram to show how it´s all connected
Supplies
- cheap mig flux core welder
for mod 1:
- voltage regulator 220v 4000w
for mod 2:
- relay 12v
- 820k resistor
- 250 k potentiometer
-12v power supply
Electric Diagram of the Welder
![serie.png](/proxy/?url=https://content.instructables.com/F42/S83H/KIEKHH1H/F42S83HKIEKHH1H.png&filename=serie.png)
Voltage Regulation and Welding Cut
![cheap MIG flux core welder - mod 1: cut and regulation](/proxy/?url=https://content.instructables.com/FIC/3BT6/KIEKFT1J/FIC3BT6KIEKFT1J.jpg&filename=cheap MIG flux core welder - mod 1: cut and regulation)
![mod 1.png](/proxy/?url=https://content.instructables.com/FKL/NI3N/KIEKHRZ9/FKLNI3NKIEKHRZ9.png&filename=mod 1.png)
With this mod, you can:
-adjust the amperage of welding
- turn off the welding current , by turning the amperage knob
- leave the fan cooling the main coil of the welder
but the regulator leaves too much dead zone on the knob, and the welder still welds when the wire touches steel
Press to Weld and Welding Fine Tunning,
![cheap MIG flux core welder - mod 2: press to weld and welding fine tunning](/proxy/?url=https://content.instructables.com/FDD/9G3P/KIEKFT1P/FDD9G3PKIEKFT1P.jpg&filename=cheap MIG flux core welder - mod 2: press to weld and welding fine tunning)
![MOD 2.png](/proxy/?url=https://content.instructables.com/F2C/8I6Z/KIEKHRYY/F2C8I6ZKIEKHRYY.png&filename=MOD 2.png)
With this mod the welder works almost like a decent welder,
The video explain how to correct the dead zone on the regulator and how to pull out a wire from the internal switch,