Originally Posted by steve4102
You are going to want to get a jamb saw to cut your casings and the jamb.

https://www.homedepot.com/p/ROBERTS...in-Jamb-and-Undercut-Saw-10-56/205399057
The thing about these is the guard around the blade can keep you from getting into tight corners so on the two I had years ago I removed the guards which makes them dangerous as hell. I wouldn't let anyone use them because I knew how easy it would be to lose fingers.

God bless Texas-----------------------
Old 300
I will remain what i am until the day I die- A HUNTER......Sitting Bull
Its not how you pick the booger..
but where you put it !!
Roger V Hunter