I typically cut the vertical sides first then top and bottom while leaving a bit at the ends to hold to door. Not sure order really matters tho. Heat from the cut can be a bigger factor, as can the actual pipe. Every pipe has stresses in it from being rolled that will release no matter what you do and some worse than others.
Just cut it and straighten it later. Keep your heat down but no real trick to it. Typically plan some time to straighten the door tho as most tend to twist at least a little.
Before I cut my doors out i weld in some braces on the back to help keep them in shape. Then I can cut them out and not worry about finishing them the same day. It also makes it easy to put them on something like a table to put the flanges on.
Before I cut my doors out i weld in some braces on the back to help keep them in shape. Then I can cut them out and not worry about finishing them the same day. It also makes it easy to put them on something like a table to put the flanges on.
Claud McBroom
Sorry, you lost me. Before you cut them, you weld braces on the back. How do you do that? I assume you cut the ends of the tank off? Or you are using pipe, not tanks?
Sorry I should've said I cut one end off then weld 2 bars on the inside of the tank after i make the initial corner cuts where the doors will be located at. Then I cut the doors completely out. (I