Thin it very slightly and use a thicker roller.
If you recoil your hand fast enough you can punch through glass without marks.
if there are lip marks on it
Glass can break easily, and can get marks and scratches
Summit Are Glass marks some of there items with a V in a circle.
a pipe that is a steam rolled a tube with a boll in the middle of it
Glass coasters are a houseware accessory used to protect a surface from a cup, glass, or something other type of container that might sweat and leave a water ring on a table. A roller coaster is an amusement park thrill ride that might make you barf.
The Firehawk roller coaster is a roller coaster found at Kings Island in Mason, Ohio. Originally, the ride was called X-Flight when Kings Island was called Six Flags of World Adventure.
america and japan
That would be Ripple Marks
a glass, a shirt, cheek,
it could be Libby. It is DEFINITELY Libbey Glass. Libbey is the only glass manufacturer that marks their glassware with the notorious Libbey script L