The Red Devil acrylic sheet scoring knife will allow you to score you acrylic sheet and snap it to your desiresd size. 

Mark your sheet, use a metal ruler as a guide and carfeully score your sheet 5-6 times applying pressure. Place the sheet on the edge of a bength with the scored edge lining up ot the edge of the bench (scored face up) apply pressure to either side of the sheet until it snaps to size

NOTE: If the sheet does not snap then repeat the scoring process applying more pressure. Take care whel snapping the sheet as edges may be sharp. 

This knife has a single blade that can be resharpened.