Performance Tool (System Administration Guide - proformance tool
With a pen or pencil, mark the sheet where you want the cut to be made. If you need a perfectly straight line, make sure to use a framing square.
An easy way to break the material is to position one half on the edge of a table, forcing pressure on the other half. The material will quickly break along your scored line.Another option is to position a dowel or rod running along the length of the scored line. Firmly apply pressure on one side until the sheet cleanly breaks
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