813.01 Illegal Disc
B. Allowed modifications to a disc after production are limited to:
1. Wear and tear from usage during play;
2. Moderate sanding to address wear and tear or small molding imperfections;
3. Marking with dye or permanent marker ink.
C. Other modifications to a disc after production make the disc illegal, including but not limited to:
1. Modifying the disc in a way that alters its original flight characteristics;
2. Excessively sanding the disc;
3. Etching, carving, or engraving the disc;
4. Adding a material of a detectable thickness such as paint.