On Sep 7, 1:12*pm, "sal" wrote:
Can someone explain how I can cut an 10 in. stovepipe *with an 22% angle it
is for an vent pipe on an *4-12 *roof .

Nevermind how, I'm wondering..._why_would a vent pipe be cut on
a bias? It doesn't mate to the roof surface, it pops up through
it.