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[bvweld]

The 300DX is cc (constant current) designed only for tig and stick welding. You need cv (constant voltage) for mig applications....

[bvweld]

It is recommended to use a filler that has less than .85% Si due to Zinc Embrittlement

I have tried 7010 and had problems cracking and went back to 7018 when it was required to use a 70xx rod. Some flux cores work well also if you have alot to do.

Do a google search (galvanize...

[bvweld]

This forum has more info on the different plasma tables

http://www.cnczone.com/forums/

I have a 5' x 10' Dynatorch Table...

[bvweld]

I don't think you will beat that price much, but you might check with T&W Steel. They are in Lee's Summit Mo. and carry some alum. if you don't know about them. I bought a section of 3/16 x 2 x 4 Stainless about two months ago and it was around $700 ...

[bvweld]

I like the CK Rotary the best as far as the torch mount remotes and as Paul said, my next one will be built in too. The strap on type sometimes moves around, but I wanted the versatility of using it on different machines. I have had three types. Linear- did not like at all. Side to side was better ,but...

[bvweld]

BB sumed it up well. Since it is in a medical facility,might be a good idea to find out a few more details so you won't have any surprises and can decide how best to proceed. I have welded a few feet of duct,some only had to pass a visual inspection, some were tested with pressure. If it has a pin hole...

[bvweld]

Another vote with the TRI MIX for mig. No problems on 16ga. s.s. duct work Would not recommend straight argon for mig use....

[bvweld]

shopoutfitters.com at one time offered one using a bottle jack. They used a 20t and used a pair of return springs to return the cylinder. Looks like they upscaled their unit and don't offer it anymore....

[bvweld]

Looks like BW was answering at the same time. I like his answer better. Go to Millers resources link at the top. There is free downloadable info that would help you there.

[bvweld]

Don't let the AC/DC thing confuse you. AC (alternating Current) changes direction, which causes your arc to be not as stable. You asked about an AC advantage, if your having trouble with arc blow that is one way of handling it, or coiling your ground lead when using DC but that is another topic. The...

[bvweld]

Nothing like a little breeze while your runnin those beads ...

[bvweld]

Does it include a cooler and a torch? If it does your in the ballpark. I would guess $1,500 to as much as $2000 on average. Good luck

[bvweld]

Mag Drill

I have a small Hougen HMD904. I would look at the HMD904s, might help in alignment once your locked on. Or maybe a HMD150 if 1 inch is enough travel. I would think for what you are doing (1") or less a compact magdrill would be an advantage. The Jancys and others have...

[bvweld]

Tig -Mild Steel

This is a job I finished last year with a 300DX . First time post so I hope this works...

[bvweld]

ZRC is good and here is another http://www.briteproducts.com/shop/index.htm I hear you on the paint prep. Hard to get that oil film off especially on bigger jobs. I started using a diluted phosphoric acid solution in a garden sprayer to cut through it, followed by a rinse. As far as paint I have...