Good explanation. I was concerned about chemical breakdown, especially after repeated applications of the acetone.

I was curious to note that the acetone smells like PVC and ABS plastic cement. When I worked in plumbing I was told that the cement actually melts and creates a chemical bond between two parts. I'm guessing that the light amount of acetone in the "Goo" I made is not only acting on the melted ABS but also on the surface of the grill parts.