How to Cut Schedule 80 PVC

Mark the Schedule 80 PVC pipe at the point where it needs to be cut. Pull the miter saw's locking handle so it rests on the 90-degree setting. Tighten the handle at this setting by turning it clockwise.

Rest the PVC pipe on the base of the miter saw, pushing it against the back stop. Pull the blade down to make sure it lines up with the mark on the pipe.

Hold the pipe firmly with one hand, at least a foot from the blade, and while squeezing the trigger, pull the saw blade's handle down so it cuts through the pipe. Push the blade's handle back up and away from the pipe, and remove the pipe from the miter saw.

Scrape away any burrs or plastic fragments from the cut pipe end, using a tradesman's knife.