Measure the ruler against the cutting line and then draw the knife repeatedly down its edge gradually increasing the pressure with each pass.
How to cut acrylic sheet.
First grab a metal ruler and a utility knife preferably one with a brand new blade.
Place the sheet over hard edge with groove side up.
Be sure to use a compressor to keep the sheet in position to avoid chipping and more time needed to polish the cut.
Use a 7 1 4 plastic cutting saw blade to cut acrylic with a circular saw.
Use a 10 plastic cutting saw blade to cut acrylic on a miter saw or table saw.
Then score the line using a plastic scoring blade using the ruler as a guide so your line is straight.
Thicker plexiglass strangely enough allows for the simplest of the cutting processes.
Use acrylic point drill bits to drill holes in acrylic.
Routers can be used to cut acrylic for both curved and straight cuts.
Mark the area of sheet you want to cut.
For best results use another tool like the earlier mentioned table saw to cut your acrylic roughly before getting a more exact finish with the router.
Use scoring knife to cut a narrow groove in the acrylic sheeting scoring preferably works on sheets less than 6 35mm in thickness.