Miller used to make a lead called a Cobra-matic. It is very similar to the XR being offered. I used one every day when I was working with U-Haul building moving trucks, vans, and trailers 30 years ago. They have a set of rollers in the head of the lead like the XR dose. This helps pull the wire through the lead while the machine pushes it. There is also a wire speed controller in the head of the lead (just like the XR) so that you can adjust for going up or down or around without having to stop and restart. The rollers in the lead that pull the wire through also help keep it from binding up at the machine end, which is what happens when you try to push it through with softer fillers from the machine end alone. Doesn't' happen as much with 5356. But dose happen pretty often at the machine end when using 4043. That is why a set of rollers were put in the head, if that makes sense.
How much amperage do you think you will be needing to do the type of work/repair you will be doing? And how much down time between beads are you willing to take (Duty cycle time). That will determine your power source needs. Then pick a lead type after determining that.
How much amperage do you think you will be needing to do the type of work/repair you will be doing? And how much down time between beads are you willing to take (Duty cycle time). That will determine your power source needs. Then pick a lead type after determining that.
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