Another Spray Transfer question

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My son and I are relatively new to welding, but we are learning a lot and having fun building stuff.  We have a Millermatic 210 and I assume all the welding we are doing is short circuit transfer.  We have both .023 and .035 wire and are using 75/25 Argon/CO2 shielding gas.Can I run spray transfer with our Miller 210 on steel with the setup we have?What is pulsed spray transfer?  I assume it takes special equipment to weld in that mode.Thanks for the info!
Reply:It probably will spray, but the gun is not made to take the heat.  What does the voltage dial go up to? 25v?You will need 98% argon 2% oxygen.  92% argon 8 or 10% Co2 will spray, but needs more volts.DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:The gun will take the heat just fine. With the MM210, you can only spray at the extreme top end...at 10-15% duty cycle. No reason the gun won't take that at the duty cycle. Mine did it just fine.98Ar/2Oxy is how most get the spray transfer going. I use 92Ar/8 Co2 and have no troubles at all getting into spray. I wasn't able to get .035 wire to get into spray, but .030 does it very easily. You will be on tap 7 with the WS around 50-60. Never ever tried spray with .023 wire. Matter of fact, I haven't ever run any in the MM210. The MM runs better on .030. You can see a much better reaction to the different settings with the .030 over the .035.
Reply:I never thought about the duty cycle for the Mig gun.  I have sprayed with .030 and 98/2 with a wirematic 250 and the stock gun.   It would do it, but I think it was too hot for the gun.    I don't find many applications for true spray welding.  For me its hard to control.  DavidReal world weldin.  When I grow up I want to be a tig weldor.