If they thought someone could get it out they wouldnt of put it in there. There are 2 processes on this. One that leaves a yellow tint with age, the old cold process and a newer hot process. Most attempts have ruined any chips. Even cutting them down to a smaller size chances are they will break. Tried it on a toilet seat from Harrah's. Also a Sundowner Reno.
If you figure a way please tell me.