Originally Posted by
nomadmax
I watched a Youtube video of a guy who said you can use a 2x4 on it's edge levered against the seat tube to bend out one chainstay at a time
If I were to think of all the ways to dent or bend a seat tube, THAT would have to be at or near the top of the list. But hey, it's OK, he put a towel under it
In fairness, it'd take a lot of aggressive and ham-fisted levering with a 2x4 to hurt an old steel frame. I've used this method (from Sheldon Brown) with no ill effects on an old steel Bianchi, it worked beautifully:
https://www.sheldonbrown.com/frame-spacing.html