The Lock Grinder is an engineering item featured in RAGE and in the co-op mode Wasteland Legends. It is used to break open locked doors found in several locations throughout the Wasteland. File:2011-10-16 00004.jpg There are in total 14 locked grindable doors in the Campaign. The player finds one Lock Grinder in the Abandoned Distillery, and so will need to engineer 13 more to use through the game. Usually there are more than enough useful and/or valuable items behind the doors to make it well worth a Lock Grinder used to open it.