Knives
Plastering Courses in Manchester - How to Plaster Index Page
How to use a Plasterers Trimming Knife
A trimming knife is used to cut the plasterboard. Knives come with either a fixed replaceable blade or the safer, retractable blade type.
This is done by scoring the top paper surface to create a line of weakness across the board. When pressure is applied to the area behind the score, the board will break cleanly along the desired line.