Some guys have anticipated that there would be spring back in the pipe after the door is cut. After all , they actually start with a flat sheet and roll form it and seam weld it together under several tons of pressure. . A remedy, I saw a guy do on YouTube once was to split the pipe 48" longways. The pipe actually sprung open about 3" That took the tension out of the pipe, which would turn the 24" pipe into about 25". He then added a flat bar strip back in the gap and rewelded it. He then left that at the bottom of his CC and zero door spring problem. And no one ever know any difference... I thought tht that was a cool trick. Saves a bunch of time in the long run. Some pipe however doesn't seem to be under as much tension. I guess it is a factory setup issue on their roll formers.. IMHO!PostOak wrote: ↑August 3rd, 2020, 3:37 pmNow that gives me something to think about. I cut the top of the door and welded the hinges on, then cut the bottom and tacked a tab on so the door won’t fall in, and finished the rest of the vertical cuts later. My thought process was the door will always be perfectly aligned, that is if it doesn’t warp or bend. But I did not leave gasket space. I’ll have to bend the door back really close and see what happens
I’m going to pick up a 20T bottle jack and get it bent back into shape. Then I’ll try some gaskets and my flat strap, that should be enough to make it work. I hope...
I have a 42” section of a 250g tank I will use on my next project. I plan on using this method to take the tension out of the shell.tinspark wrote: ↑August 3rd, 2020, 6:50 pm
Some guys have anticipated that there would be spring back in the pipe after the door is cut. After all , they actually start with a flat sheet and roll form it and seam weld it together under several tons of pressure. . A remedy, I saw a guy do on YouTube once was to split the pipe 48" longways. The pipe actually sprung open about 3" That took the tension out of the pipe, which would turn the 24" pipe into about 25". He then added a flat bar strip back in the gap and rewelded it. He then left that at the bottom of his CC and zero door spring problem. And no one ever know any difference... I thought tht that was a cool trick. Saves a bunch of time in the long run. Some pipe however doesn't seem to be under as much tension. I guess it is a factory setup issue on their roll formers.. IMHO!