I cut some 3/4" PVC awhile back when I was building a screen room, to make locating plugs for the aluminum post material. Worked out pretty well using a 2-flute 1/8" end mill. I really don’t recall the DOC or feed rate (probably about 30 IPM, but I run everything rather conservatively). Just start cutting it, and you’ll get a feel for it. Watch that static when vacuuming it though!