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Old August 13th, 2013, 11:10 AM   #1
Lousypirate
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Default Oxy/propane setup

Some questions. What kind of propane tank do you need? What thread for the port?

I know a normal touch setup will work, just need different tips maybe?

Only using this for cutting and heating, so I didn't want to have to deal with acetylene.

Please help me confirm my thoughts, or any other valuable input.

I have some larger propane tanks i got for free, so hoping i can make those work.

Thanks, Jake
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Old August 13th, 2013, 11:16 AM   #2
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Propane doesn't work too well, MAPP gas is slightly better.


Just cuz you haz propane tanks shouldn't mean you need to use them. Trade em in on acetylene and get some big boy torches.
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Old August 13th, 2013, 11:50 AM   #3
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Propane doesn't work too well, MAPP gas is slightly better.


Just cuz you haz propane tanks shouldn't mean you need to use them. Trade em in on acetylene and get some big boy torches.
I thought it just took a bit longer to heat up and that was about it?
I'll have to dig up some of my previous research
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Old August 13th, 2013, 11:58 AM   #4
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I've never been able to cut worth a damn even with MAPP gas, and I could do some very light brazing. I screwed with propane and MAPP gas for years until I finally upgraded to acetylene and have not regretted it.
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Old August 13th, 2013, 12:08 PM   #5
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Propane works alright for cutting. The only issue that I am aware of is it takes a little longer to cut and uses about 3 times the oxygen that acetylene would use for the same job. On the other hand, propane doesn't need to settle like acetylene when you move it.

I do believe the tips need to be changed but am not 100%
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Old August 13th, 2013, 12:33 PM   #6
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yes, it needs a different tip. it does take a bit more to heat up, but it cuts fine for me. I have been using it for 8+ years.
the acetylene regulator screws into the propane tank valve.

If I run out of propane in the middle of the night working on something, I go grab the tank from the BBQ and finish my project.
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Old August 13th, 2013, 12:40 PM   #7
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I use oxy/propane almost exclusivly for cutting.

The hoses must be T grade hose.

The acetelyne regulator will thread right into a bbq tank.

I have a victor torch, and just bought a "victor style" lp tip of the right size off eBay for about $8.

It really doesn't take any longer to pre-heat the type of stuff I cut (under 1/2 in), but the travel speed is a bit slower.

I still get super clean kerf, it's not all shitty.
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Old August 13th, 2013, 12:45 PM   #8
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Here's a victor style GPN 0 tip for $8.41 shipped.

http://www.ebay.com/itm/Victor-torch...2#ht_197wt_958
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Old August 13th, 2013, 01:21 PM   #9
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Time to politely ask and/or raid the family welding shop.
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Old August 13th, 2013, 01:34 PM   #10
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Propane works alright for cutting. The only issue that I am aware of is it takes a little longer to cut and uses about 3 times the oxygen that acetylene would use for the same job. On the other hand, propane doesn't need to settle like acetylene when you move it.

I do believe the tips need to be changed but am not 100%
Acetylene has to settle after you move it? Where did you hear that interesting tidbit of information?
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Old August 13th, 2013, 01:42 PM   #11
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Acetylene has to settle after you move it? Where did you hear that interesting tidbit of information?
That's news to me as well.
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Old August 13th, 2013, 01:44 PM   #12
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That's news to me as well.
It must be the fact that acetylene is a liquid bottle unlike propane which is only gas. I guess I learn something new everyday!
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Old August 13th, 2013, 01:47 PM   #13
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It must be the fact that acetylene is a liquid bottle unlike propane which is only gas. I guess I learn something new everyday!
Well dont go around telling people that because you will look like a fool. Its only the case if the cylinder has been stored laying down.

http://www.tpub.com/steelworker1/33.htm
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Acetone is a liquid chemical that dissolves large portions of acetylene under pressure without changing the nature of the gas. Being a liquid, acetone can be drawn from an acetylene cylinder when it is not upright. You should not store acetylene cylinders on their side, but if they are, you must let the cylinder stand upright for a minimum of 2 hours before using. This allows the acetone to settle to the bottom of the cylinder.
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Old August 13th, 2013, 01:51 PM   #14
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Well dont go around telling people that because you will look like a fool. Its only the case if the cylinder has been stored laying down.

http://www.tpub.com/steelworker1/33.htm
You should never store bottles laying down. Hell on most job sites you can't even lay bottles on their side to put on the forks of a sky track to put them on the roof.
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Old August 13th, 2013, 01:55 PM   #15
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You should never store bottles laying down. Hell on most job sites you can't even lay bottles on their side to put on the forks of a sky track to put them on the roof.
We always hooked the whole cart via shackle and short choker to the rack of the lull or the hook on a crane. There was no reason to move around a single cylinder. I don't believe I ever saw any cylinder on its side unless I'm transporting a bottle of shielding gas in my car.
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Old August 13th, 2013, 02:03 PM   #16
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We always hooked the whole cart via shackle and short choker to the rack of the lull or the hook on a crane. There was no reason to move around a single cylinder.
The way the article that you quoted makes it sound like acetylene is a liquid like propane, which it is not. If it was a liquid why would it take 2 hours to make it to the bottom of the tank? It may be a "moist" gas that takes a bit to seperate but it is by no means a liquid filled tank.
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Old August 13th, 2013, 02:06 PM   #17
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The way it read to me is storage on the side allowed the acetone to separate into a liquid state.

This is at the top of the page:
Quote:
Acetylene is a flammable fuel gas composed of carbon and hydrogen having the chemical formula C2H2.Whenburned with oxygen, acetylene produces a hot flame, having a temperature between 5700F and 6300F. Acetylene is a colorless gas, having a disagreeable odor that is readily detected even when the gas is highly diluted with air. When a portable welding outfit, similar to the one shown in figure 4-3 is used, acetylene is obtained directly from the cylinder. In the case of stationary equipment, similar to the acetylene cylinder bank shown in figure 4-4, the acetylene can be piped to a number of individual cutting stations
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Old August 13th, 2013, 02:06 PM   #18
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I will reword that.

When you get a portable acetylene bottle it is not liquid filled. When they fill them I'm sure it is from a large liquid tank just like argon and most other gasses.
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Old August 13th, 2013, 02:08 PM   #19
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Quote:
Originally Posted by dreezy View Post
Well dont go around telling people that because you will look like a fool. Its only the case if the cylinder has been stored laying down.

http://www.tpub.com/steelworker1/33.htm
That was what I was referring to when I said acetylene has to settle, if it was laid down for transportation. Moving around upright in the garage if fine and no need to settle.
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Old August 13th, 2013, 02:09 PM   #20
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It must be the fact that acetylene is a liquid bottle unlike propane which is only gas. I guess I learn something new everyday!
If propane is only gas, why is it called LPG (Liquefied petroleum gas, also called LPG, GPL, LP Gas, liquid petroleum gas or simply propane or butane)
see you learned two things today!
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