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  • #16

    Good observation on the heat and travel speed and associated soot versus gun angle. The heat was set for short arc pushing to spray. No. It was not pulsed. Even though I have the capabiltiy I did not want to introduce extra variables when teaching someone without any experience.


    • #17
      Do the Miller pulsed GMAW machines have preset programs or jobs for doing different materials etc. etc. ? I am finding that a lot of guys here in Oz who are building alloy boats are using machines such as the Fronius and EWMs for nothing other than the fact that they just set the material thickness and the machine does the rest of the thinking for them. The downside to this of course is that being isolated from the variables doesn't allow you to interpret your results and do any troubleshooting that may be necessary.

      Does Miller sell any combination powersource/wire feeder GMAW machines that are capable of pulse and are good for at least 300 - 350 Amps? I have been looking at getting a pulsed MIG for a while and can finally get one, but it seems that by the time I buy a power source, wire feeder, push pull setup, and remote from Miller, I am up for thousands of dollars more than some of the other products that I mentioned before that are more than up to the task as well but are far simpler in terms of setup. I can justify a few hundred dollars difference no problems, but I feel as though I am doubling up if I get a wire feed with an 18ft push pull setup on the end of it and am paying a LOT more to boot!!
      "Its the way it spatters that matters!"


      • #18

        I use the Alt 304 and the Optima Pulser. This gives me the full range of 20-400 amps of pulsed GMAW. On 3 phase the duty cycle is 300 amps at 60%. On 1 phase the duty cycle is close to 30% at 300 amps.

        This machine is discontinued, but the XMT 350 and the Optima pulser would be a very comparable set up. The wire feeder you get is pretty much preference as long as it is true CV and not voltage sensing.

        The Optima pulser runs pre-programmed in a synergic mode: when you adjust one parameter it follows by adjusting all the others. It also has a manual mode so you can have total control over the pulse parameters. In addition it offers adaptive and non adaptive pulsing. In adaptive pulsing the pulse frequency changes as needed to maintain a constant arc length no matter your stick out. In non-adaptive pulsing the pulse frequency remains constant even though the arc length changes.

        Miller does make the Invision series which has a built in pulser, but I really believe the Optima lends the operator more control. Check it out!