Wire feeder for TIG welding

[markgyver]

Hello,

Here you can see how I build a wire feeder for my Tig welding machine.
The cover is made of 1mm and the housing out of 3mm sheet metal.
The clamp for the wire holder also serves as a brake so that the reel does not unwind by itself.
The wire holder is 3d printed and fixed with 2 bearings on a 25mm round steel.
The wire feeder motor is attached with a 3D printed holder.
There are 2 GX16 connectors to which the hose package and the welding device is connected with a connecting cable. This way the button from the torch can start the wire feeder.
The controller consists of an Arduino nano, a step-down converter, an L298N motor driver and a dual 24 Volt relay.
The device is operated via a Nextion touchscreen and has 3 different modes.
These modes are no wire, enable wire while the button is pressed, and the last enable wire when the button is pressed and disable wire when the button is pressed again.
To attach the cable to the torch, I made a holder that fits on a WP26 torch and can be adjusted to the nozzle.

Modes:
OFF - no wire
2T - enable wire while the button is pressed
4T - enable wire when the button is pressed and disable wire when the button is pressed again

Wire motor bought it for €12,-now it is more expensive €27, https://www.amazon.de/gp/product/B08...?ie=UTF8&psc=1

Nextion NX3224T024 € 25,- https://www.amazon.de/gp/product/B08...?ie=UTF8&psc=1

L298N Dual H-Bridge €5.74,. https://www.amazon.de/Neuftech-H-Br%...s=ce-de&sr=1-4

LM2596 DC/DC-Converter €7.04,- https://www.amazon.de/ARCELI-ST%C3%9...4795867&sr=8-3

23V dual channel relay €12.10,- https://www.amazon.de/gp/product/B01...?ie=UTF8&psc=1

Wire 0.8mm €34.5,- https://www.amazon.de/gp/product/B07...?ie=UTF8&psc=1

You need also 3mm and 1mm sheetmetal a 25mm steel rod and some screws and wires. You see everything who you need in the CAD drawing.