Todd!

Where's the 'hot rodder' in that? Hell - anybody can pay someone else to do their work... but there's no pride in that... no "I did X"

Besides -- you look a guy in the eye and tell him you cut and welded your gas tank -- that dude thinks you're a crazy guy! He won't mess with you - ever!

:rofl:

Good info Greg

Besides if things go in the wrong direction you can always to cover in the pool, thats if you filled it yet which I doubt.

LOL --- That's good info right there! Hadn't thought about welding poolside!

Yes it has water in it year 'round... and the pool boy comes once a week 52 weeks a year...

I have multiple tanks of welding gasses (with TIG and MIG machines - and Stainless gas mix for SS MIG welding) -- so will run some gas through the tank while cutting and welding --- but posted the Dry Ice "fix" because most guys DON'T have access to multi tanks of gas etc... and I'd never seen that solution before. That came off a dry ice supply website - not a "forum" so I know it's good info.

http://www.continentalcarbonic.com/d...th-dry-ice.php

Says you can use dry ice to get rid of bed bugs too! Won't be needing that here - but ya never know where ya might wind up some time! :rofl:

I hear ya, if I was a rich guy I'd have to much pride to pass the buck in most situations. This might be one of those deals. :unibrow:

I once put on a wet suit and welded a gas tank in my swiming pool.:lol: :lol:

Just be sure to make contact with the lead and the ground - one in each hand...

LOL

I work in the Industrial Gas business. If you put your tig gas (argon) in the gas tank you will have a 50/50 mix of argon/fuel vapor. If you purge it again you will have a 60/40 mix and so on. Dryice CO2, when it turns form solid to gas it builds psi, giving you a continuous purge. Let it sit in there for at least an hour. Please don't use any other "welding gases" you would use 200+ feet before it would be safe and even then?

I ran about a gallon of SIMPLE GREEN straight from the jug in the tank yesterday... flipped it - swished it - end for end etc.... then flushed it with cold water. Then filled it 3/4's full - and added the rest of the gallon jug of Simple Green to that - and agitated the tank after filling it.... Then drained it and rinsed it again a couple times. It's now drying in the shop. I'll give it a couple days to dry out.

I'm going to do the dry ice bit - I like that idea.. it makes sense to me - and is easy to do and to get at the grocery store. Besides - I can play with it and make fog and stuff... :rofl:

Normally - if I'm welding SS tubing etc -- I'll back gas it... but that is for looks and cleanliness (different type of welding). When I said "welding gases" I'm talking INERT gases - CO2 or ARGON or CO2/ARGON mix... any of which will/would work fine for this since they're INERT...

Man you guys should build the space Shuttle with all these hypothiths.

I've welded about 8 gas tanks over the last few years. The secret issssss ? drum roll please...... Take liquid dawn hand soap. Put it in a bucket mix it real good and poor it in the tank. Swish it around a few times let it sit on one side for an 1/2 hr. or more turn it over and do the same. Flush it out with water. Blow it out dry it off and weld. That simple!! And just think you eat off this stuff. It also has a good smell. :woot:

Mark

but....but....but....

It's so much fun to discuss... and engineer... and think about... and research...

:rofl:


I have to tell ya -- part of this - is the SNIFF TEST.... you clean out the tank - and let it dry... stick your schnoz in there and inhale... if it smells like gas... you'd best clean it again.

That's why I used the SIMPLE GREEN.... its a detergent... water and gas don't mix..... so flushing with just water - is not going to get the gas out... you've got to add some detergent. Just the same - I'll still back gas or dry ice the tank - just because "I'll feel better" about it... to me - it's like "why not"?

I'm a licensed (Internationally) pyro... anything that goes boom --- "I" want to have control over - I say who - I say when.... (A line from Pretty Woman). :rofl:

THANK YOU MARK (for the soap info) - that does make me feel better.... and I'm relatively certain I'm on the right track.