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[SundownIII]

One day (I hope) drpipe will come up with a helpful, knowledgeable post.

Until then, I'll just take his posts as PURE BS.

[SundownIII]

Mako,

Being as you're using a sine wave machine (Shopmaster), with no balance control, you're really limited to three things controlling your bead profile. Amps, arc length and angle of attack. From your description of the bead (wide with little penetration), I suspect you're either...

[SundownIII]

Lots of "really dumb" responses to this thread...

[SundownIII]

Pulsed mig on anodized aluminum?

Bet that was real purdy.

[SundownIII]

On 5-1-12 you asked about "pulse settings" on .030 aluminum, using a Dynasty 300.

Now you're asking about pulse settings for a Dynasty 200.

The same guidance you received previously applies.

Your comment about "the machine was already set"...

[SundownIII]

The way to get drdumb banned is for everyone to complain about his posts.

He's proven to be a marginally compentent welder who's primary goal seems to be in running other down. His comments in this post not only "crossed the line", but also proved what a low class poster he...

[SundownIII]

Drpipe needs to be shown the door.

If he's lucky, it won't hit him in the butt on the way out.

[SundownIII]

$18-22 / hr. for a guy with those qualifications.

LMAO

Employment picture in RI must be really bad.

[SundownIII]

Sounds like you need a push/pull feeder such as the aluma-pro gun.

Check out Miller's catalog on the AlumaFeed system.

Cheapest route is the 30A, but you're going to get tired of feeding 1# spools real quick with that type work.

[SundownIII]

I use C10 (90% Argon/10%CO2) for non pulsed spray. When you get up to 15% CO2, you're approaching a mix (generally around 18% CO2) that's likely to produce a globular transfer vs a true spray.

The 98%Argon/2%O2 is a little hotter than the C10 and I'll use it infrequently, since my main...

[SundownIII]

Based on the questions asked by the OP, and his responses, he's got a LONG way to go before he worries about welding 3/8" aluminum.

Just a tip. Multiple passes on aluminum don't work the same as they do on mild steel. Either you got the amps to do the weld, or you don't. Preheat...

[SundownIII]

Just a couple suggestions...

Lose the zirconated tungsten. For AC welding on an inverter, I prefer the 2% Lanthanated. Second choice would be ceriated. The zirconated tungsten performs best on the squarewave machines, in lieu of the pure (green).

Try using 5356 filler...

[SundownIII]

.No such thing as a "free lunch".

Check out the consumption figures Helios has already posted and do the homework.

At idle, which is "most of the time" for a hobby/small shop, the Sync with PFC is a real power hog.

Better to spend the...

[SundownIII]

No.

A hobby welder/small shop adding PFC to a Sync 250 would be DUMB.

[SundownIII]

I say **** this politically correct crap.

The LIMITATIONS of trying to do a CV process (Mig welding) on a CC machine have been discussed and beat to death in more threads than I care to think about.

Just because the literature states a feeder (12 VS) can accomplish a given...