What is the best technique for using a door jamb undercut saw to ensure a precise and clean cut when trimming a door jamb?

To ensure a precise and clean cut when using a door jamb undercut saw, the best technique is to carefully measure and mark the desired cut line on the door jamb. Use a straight edge or level to guide the saw along the marked line, making slow and steady cuts to avoid splintering or damaging the wood. Additionally, make sure to wear safety goggles and gloves while operating the saw to protect yourself from any potential hazards.