Posted by JML755 on July 08, 2010 at 07:05:56 from (66.184.63.110):
In Reply to: I B weldin/gobbin posted by bc on July 02, 2010 at 07:35:45:
Ignoring all the vitriol between trucker and 135 fan, the thread interests me because I have a 30 year old portable compressor that developed a pin hole leak on the bottom about 10 yrs ago. Not having a welder at the time, I used a propane torch and brazed a patch. It's been fine and I don't lie awake at night worrying about an explosion. Why? Because everything I've read about "catastrophic" explosions of air tanks has been because of over-pressurization. Plus, this is a small tank, guessing around 10 gallons. Plus, it's ON THE BOTTOM and any force from a "rust-through" will be directed at the floor. I've worked on pressure vessels and know the power of air pressure. (We built car air-bag testers that would kill you if you stood in front of the outlet and opened the valve.) I've also been hit with hydraulic fluid at 800 psi when a hose let go. Got a little wet, but I didn't die.
And there are a lot of farmers (and other handymen) that have repaired a LOT of equipment (including air compressor tanks) by welding that AREN'T trained or certified welders.
So do we require that Lincoln & Miller only sell their equipment to certified welders? I've learned a lot about welding by reading, surfing the web (including this forum) and talking to the certified welders in our shop. And just about every welding forum advises that the best way to learn to weld better is to, well, .......weld.
It's fine to disagree with someone's advice or opinion on these forums but the people who brag about their experience, knowledge, certifications, etc. and call Lance an idiot for trying to learn something do this and all other forums a disservice by dissuading people from asking questions for fear of being called an idiot.
The purpose of these forums is to share knowledge, help someone out with a problem and NOT to pump your chest about how great and smart you are.
Anyway, this thread is a good reminder and I think I'll go out to the garage, drain the air tank (hasn't been done in a while) and check on that braze job I did years ago. :wink:
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