If it is square cuts, not shapes, you probably can use a table saw.
Not knowing the material I can only suggest a generic blade that works well on acrylic and most plastics well.
The generic specs are a non-Ferris cutting blade, C4 carbide teeth, at least 80 on a 10" blade. It should be a triple chip design, but there are now two triple chip designs, you need the one with the center chip tooth the same length as the other two. They are now making blades with a protruding center chip tooth. It works better on metals, but will cause a small chip on the bottom surface when you exit acrylic. The C4 carbide will last for years doing a lot of acrylic before needing resharpening.
Philadelphia, PA (Really Bensalem)
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