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| Tips, Techniques, and Questions -- Technical questions or tips |
2009-10-31, 11:52am
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...as in.. acoustic
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Join Date: Aug 25, 2009
Location: Illinois
Posts: 55
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POOP
I'm not sure I posted in the right place, but I have major questions about POOP in the torch questions area.
If anyone is a genius that can help me out (and I do mean "barney-style" explanations)....
I certainly would appreciate it. 
I'm such a dork.
ThankyouThankyouThankyou
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2009-10-31, 1:16pm
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Senior Member
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Join Date: Dec 31, 2005
Location: Corpus Christi
Posts: 508
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When you light your torch first, turn on your Propane, light it, then turn on the Oxygen.
That is the PO
When you shut down your torch, first turn off the Oxygen, then the Propane.
That is the OP part
Steve
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2009-10-31, 8:44pm
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Lampworkaholic!
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Join Date: Apr 22, 2008
Location: Cornelius, NC - because weather
Posts: 5,158
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POPO also is an option. I turn off my propane at the tank and bleed the line with the oxy still on, then turn off the propane at the torch and finally turn off the oxy 
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2009-10-31, 11:16pm
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Know-it-all Megalomaniac
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Join Date: Oct 22, 2005
Location: Californication
Posts: 6,282
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I go with POPO too. It's the way I was taught in metalsmithing, and
there's no reason it shouldn't hold up in lampworking too.
Propane On
Oxy On
Propane off
Oxy on until all the propane bleeds from the lines, then oxy off.
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2009-11-01, 5:25am
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product of the universe
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Join Date: Sep 06, 2005
Location: Rutvegas Vt
Posts: 598
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I use the popo method as well it seems to make more sense, especially with premix torches.
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Chris
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Currently using fire.
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2009-11-01, 7:45am
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Dangerous Woman
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Join Date: Nov 21, 2005
Location: Southcentral PA
Posts: 5,018
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I do the PO but when shutting down I turn my O2 off at the torch, then close the propane valve. When it the fire goes out I open the O2 knobs again then turn off my concentrator.
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Nancy
May your torch burn brightly and your oxy never run out. - Karen Hardy
On a Cheetah with a hurricane Still have my Lynx as a back up.
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2009-11-01, 8:06am
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...as in.. acoustic
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Join Date: Aug 25, 2009
Location: Illinois
Posts: 55
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Thanks, everyone.
It certainly seems that there is still an element of *preference* to some of the details...
And not as many hard and fast rules.
But seeing how some of you do it really really helps me! So- Thank You!
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2009-11-01, 8:47am
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Corgi Cult Member
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Join Date: Jan 10, 2006
Location: Central Illinois
Posts: 3,723
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Both POOP and POPO work, but never try to light your gas with the oxy already going. I too use a concentrator so I start the oxy first to let it warm up, then briefly turn it off to light the gas. I always pass my hand in front of the torch face to verify the oxy is off before starting the gas. By building this simple movement into my routine, it gives added assurance that I'm not going to hear that frightening pop that can happen if a bit of oxy is still flowing.
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Kathy
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2009-11-02, 5:40pm
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Carol Bouler Owens
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Join Date: Feb 22, 2008
Location: Aiken, SC
Posts: 96
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I do the poop also, but today I forgot and nearly screamed when the oxy went POP!
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2009-11-02, 7:44pm
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Senior Member
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Join Date: Nov 21, 2008
Location: Herndon, VA
Posts: 867
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Quote:
Originally Posted by dogmama45
I do the poop also, but today I forgot and nearly screamed when the oxy went POP!
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Yup, I do POOP too because I can't stand the POP either!
Linda
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2009-11-02, 9:19pm
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Senior Member
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Join Date: Aug 28, 2005
Location: Sanger, Tx
Posts: 3,552
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I'm sorry, I thought this was a question about kitty's using the table as a litter box. (sorry, my bad)
-D
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2009-11-03, 11:31am
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Mary Lockwood
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Join Date: Jun 21, 2005
Location: Boonies
Posts: 5,831
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I do POOP when I'm just starting and stopping during a general workday.
I do POPO when I'm done for the day and won't be back to the torch and I'm bleeding my lines.
If I'm done for the day, I close the propane tank valve while the torch is still lit- once all the fuel has burnt out of the line, I turn the oxygen off. So- technically that is POPO .
Just wanted to say that because the torch has to be lit while you are bleeding the lines. It is illegal, unsafe, against code and stupid (however one would like to phrase it) to bleed unburnt fuel into the air.
I'm sure you guys all know that, but a newbie coming along reading old threads might not- so I added it.
~~Mary
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2009-11-03, 11:43am
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Harold Williams Cooney
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Join Date: Jan 13, 2009
Posts: 713
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Well, just for giggles:
I use PO/OPO.
To turn off; o2 out, propane out, then 'burp' with o2
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2009-11-03, 11:51am
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da General
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Join Date: Oct 05, 2006
Location: San Francisco
Posts: 13,002
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Does no one loosen the propane regulator pressure after each torching session? We always do.
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