Have you ever tired to clean PVC Pipe? It's not an easy job. My recent project called for 200 Feet of PVC Pipe. I had plenty of time to experiement. I tried Pipe Cleaner, Acetone, Sanding, Steel Wool, and Paint Remover. They worked, but it required a lot of time and effort. I kept thinking that there must be an easier way.
The best method that I found was to start by wiping the lettering with Goo Gone. Just a light coat is all that is needed. Then go to Step 2.
Using a second cloth, clean the lettering with Acetone. You will need to scrub a little and the lettering will wipe off.