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
For a smaller job, one of these multi-tools will do the casings and they're useful for many other things. There are lots of models, both corded and battery, to choose from. They're a lot cheaper than a dedicated casing saw, too. There are lots of different blades you can get to match the job.

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