Thread: Wire Feeder
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10-09-2022 #1
I have just treated myself to a Stick Welder, Plasma Cutter and TIG combo machine. Then don't-ya-know, I had a bout of illness and I haven't been able to get into the workshop to learn to use it (play with it). So I designed and made a wire feeder. My MIG has a large reel in it, but I also acquired some mini reels of mild steel, stainless and ali. My idea is to feed the wire into the joint instead of using filler rods when TIG-ing.
Here's some photos of the device.
The feed mechanism is an old all-metal 3D printer extruder with a larger pinch roller and a stronger spring.
The pen is mainly an M4 long brass spacer and a MIG tip with a 3D printed housing and a push button.
The electronics are a Nema17 driver board and an oscillator made to feed the signals to the driver. Controls are On/Off, Direction, 3 speed ranges, and pot for fine adjusting the speed.
I had to buy the foot pedal from Amazon (£8 for two) and some GX16 2pin connectors for the foot pedals and the pen. The welder has a 2 pin GX16 connection for the torch switch, so I could use one of the foot pedals. Everything else I had already.
Cheers,
Rob
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