It's blind faith. Make 3 cuts in the outer shell. One bottom dead center, the other 2 in the 4 o:clock and 8 o:clock positions. Once you think you're cut almost all the way through. Take a muffler inside cutting tool and beat the outer shell out. Position the tool at the cuts you made.
Pic of tool. It's for an air chisel, but will work with a hammer.
Last edited by Rusty; 01-21-2020 at 11:02 PM.
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