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Only $10 for all 2024 SX, MX, and SMX series (regularly $30).
Not that brand of plugs but a similar system.
I have done maybe 8 pipes or more with my set up.
After about six and while I was heating a dent with acetylene/oxy set up my air inlet gave out.
How did I know?
The pipe blew one way while the valve went another. Pipe blew about 7 feet to my right and the valve about 30 feet the other. It was quite an explosion.
Air pressure set around 50 pounds or whatever the instructions says.
My lesson is not to let heat stay in the pipe once done. Get that heat out but be super careful about relieving it.
Wear gloves and eye pro.
Make sure if a seal goes the pipe cannot launch into you.
I did mine all outside on a work bench set up.
I had no experience with using a torch. But I wouldn’t use anything else.
And yes, wear all the right safety gear. Even hearing protection in case it goes really wrong.
The Shop
We quickly learned that around 30psi would get most dents out nicely, the more you have to do it the thinner and weaker the pipe seems to get.
If one of them seam welds let go under pressure, you won’t have a face left...
The juice ain’t worth the squeeze on this!
The key is to have a relief valve so the air pressure regulates with the heat. A screw like a Carby bowl drain works well.
30 psi is way too much: more like 5 psi.
Be happy with 90 to 95%. Trying to remove deep creases and dints across weld seams will have you burning holes or stewing the steel.
Thank you.
You have to get your balls out of your missus’ handbag first though.
“If you’re gonna be stupid, ya gotta be tough?”
Since my face holds up my hairline, I may as well keep it intact. Shards of metal pipe in my cheek, mouth and eyes seem like a really bad idea.
Pit Row
It would be smarter to use something not compressible like water or at least an inert gas like nitrogen.
WTF, is a Jubilee Clip?
Preheat pipe especially area around dent to burn inside carbon off. Use a pressure gauge to monitor. Map or acetylene torch. tapping around dents sometimes helps them move if stubborn. Cover plugs with wet towel if concerned it will slow velocity. Use eye/face protection.
Done quite a few with both a home made rig and a custom made one....
Bicycle tube for large end ...and small rubber plug on tip with both tie wired for safety.. I cleaned inside really well with engine degreasers and hosed out with lots of water! Learned 30psi is max pressure or less ! Had too much first time it sounds like a bomb 💣 when rubber cap blows !!
I had some major dents the only one that gave me trouble was on the seam...
I used my dental lab casting torch with oxygen propane to heat needs to be almost reddish white for dents to pop out ...just go slowly....and I found tapping with small hammer helped smooth out repair...Good Luck👍
Ive never known any pipe to have enough fuel in to ignite. And in terms of pressure you can really get some in without worry. 5psi won’t do shit, I’d happily go up to 60without a concern. I’ve done dozens over the years. Never a problem. In fact I’m doing one tomorrow.
As said before, I still hate doing them this way, but it works.
to this
Used oxy/acetylene and 50 psi and worked great
As I said I've done many.
You won't get anything out using MAP gas below 30psi.
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