Some shrinking can occur with only room temperature cooling but is greatly accelerated and multiplied by cooling with either compressed air or water squirt bottle or rag but water generally tends to provide quicker cooling.
How to shrink stainless steel sheet metal.
Get an idea of how.
Do not over heat the steel.
Heat to blue only and shrink that much.
Often called the poor man s pullmax tuck shrinking is another way of shrinking metal to gain shape.
Before you start working the precious metal on your hot rod try heating and hammering some scrap metal.
These shrinking discs work well on steel stainless aluminum brass and may on some other metals.
It s ideal when lots of shrinking needs to be done and you don t have access to a machine.
This works the other doesn t.
Heating up metal and throwing cold water on it may shrink it a tiny bit but it makes distortion and hard steel.
If you have access to a bead roller roll yourself a bead and shrink it.