Thicker plexiglass strangely enough allows for the simplest of the cutting processes.
How to cut acrylic sheet.
Use an o flute up spiral plastic cutting bit to cut acrylic with a router.
First grab a metal ruler and a utility knife preferably one with a brand new blade.
Use acrylic point drill bits to drill holes in acrylic.
Be sure to use a compressor to keep the sheet in position to avoid chipping and more time needed to polish the cut.
Mark the area of sheet you want to cut.
Use a 7 1 4 plastic cutting saw blade to cut acrylic with a circular saw.
Measure the ruler against the cutting line and then draw the knife repeatedly down its edge gradually increasing the pressure with each pass.
Place the sheet over hard edge with groove side up.
Routers can be used to cut acrylic for both curved and straight cuts.
Then score the line using a plastic scoring blade using the ruler as a guide so your line is straight.
Use scoring knife to cut a narrow groove in the acrylic sheeting scoring preferably works on sheets less than 6 35mm in thickness.
To cut acrylic sheets start by marking the line you want to cut using a ruler and a permanent marker.