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Topic Review (Newest First)
05-04-2013 03:52 PM
MARTINSR I got you.

Brian
05-04-2013 02:10 PM
gearheadslife
Quote:
Originally Posted by MARTINSR View Post
What am I missing here? Of course a welding supply has bottles of 75/25 to rent. What are you saying? I am missing a joke or something, sorry.

Brian
the o/p said that he called and that they are out of stock??
now, if you own your own bottle.. like he does.. they may say this as they make more on the rentals..
no joke. happens alot..
05-04-2013 01:25 PM
MARTINSR
Quote:
Originally Posted by gearheadslife View Post
call and ask if thy have 75/25 bottle to rent, if yes you know they are pulling your leg
What am I missing here? Of course a welding supply has bottles of 75/25 to rent. What are you saying? I am missing a joke or something, sorry.

Brian
05-04-2013 12:04 PM
gearheadslife call and ask if thy have 75/25 bottle to rent, if yes you know they are pulling your leg
05-04-2013 08:43 AM
S10xGN I'm gonna hold out for the C25. Has anyone ever tried a lesser mix? AirGas's site shows percentages all the way down to 2%. Hmmm, if they didn't have the most popular mix, prolly even less chance they'd have one of those...

Russ
05-03-2013 09:33 AM
MARTINSR CO2 is an "active" gas mixing with the weld while Argon is an "Inert" gas that doesn't and simply pushes impurities away. So by definition if you are using CO2 you don't have a "MIG" at all. I have only used the 75/25 doing auto body and fab work, other than the straight Argon we use on the MIG braze machine at work. From what I understand the CO2 welds hotter and more suited for hard core welding on fences and stuff that a pretty weld isn't needed and where you want more penetration.

Brian
05-03-2013 09:24 AM
S10xGN My Miller handbook says CO2 is OK, but C25 makes for less spatter (God knows, I need that!). I guess I'll wait until the bottle runs dry and see if they call me. Hard to figure how a supplier of industrial gases in an area of very heavy industry would be out of the most popular MIG shielding gas, especially with two fill plants less than 100 miles away...

Russ
05-02-2013 10:14 AM
timothale
co2 ?

I bought my Used Lincoln SP200 6 years ago from a pro welder that was retiring and he gave me the large CO 2 bottle that is all I have been using, but We do a lot of heavy metal welding. I've read the the argon CO 2 mix is better for thinner gage metals, and have been thinking about buying another bottle. I have a large Argon bottle for my Tig welder and have heard that some guys Y up two bottles and Mix as they go. For tig welding heavy Aluminum Hydrogen and helium. is recommended to be added in the argon mix. Welding tips and tricks , com has a lot of welding info posted and Jody WILL answer your questions if you don't find what you need by searching his Free site or Utube videos. I did most of the weldin on the 29 Nash roadster shown when I was taking a streed rod Fabrication class a few years ago at UVU and they used Argon co2 mix.
05-02-2013 09:58 AM
S10xGN
AirGas C25 mix cylinders... Straight CO2?

Hi All,

I have my own "300" cylinder (9.25" x 55") that AirGas swaps out for me about once every 3 to 5 years. My bottle was down to 250#, so I've been watching it close. Well, yesterday my wire spool ran out so I figured to get both since it's a 30 mile round trip. Called them and they said they were out of stock and the cylinders had been ordered for over 2 weeks. This is not a one-time thing either, the same deal happened last time I needed a fresh bottle. Is it my local AirGas store or is this a nation-wide phenomenon? They have a fill plant 75 miles away in Houston (2 plants actually), so I'm having a hard time seeing how they are "out". Think it's because I have my own bottle and don't rent per month? I hate having stuff to do and not having the equipment to do it with...

Anyone ever try MIG welding with straight CO2?

Russ

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