Cast vs extruded acrylic for laser cutting

Choose for the finished part

Trotec's acrylic processing guide distinguishes two useful tradeoffs in CO2 work. Cast acrylic gives a white engraved appearance. Extruded acrylic has tighter thickness consistency and a less contrasting engraved appearance.

These are material-selection distinctions. They do not supply a cutting recipe for another machine.

Keep the sheet identity with the job

For your own record, keep the supplier name, product identifier, cast or extruded label, color, stated thickness and any masking description. Add the material safety document. If an offcut lacks a label, leave its identity unresolved instead of naming it from appearance.

Record the actual thickness used when evaluating a fitted part. A nominal thickness in a shopping listing and the sheet you are holding are separate entries in the job note. This is CutChart's suggested record format, not a supplier tolerance specification.

Check the laser family before copying a result

LightBurn's wavelength overview says blue diodes struggle with transparent or light-colored materials. A CO2 result does not establish a result for a blue-diode module. Keep the laser source alongside the cast or extruded label.

See what each laser can cut or mark for the distinction between a broad material listing and a documented operation. The optical-watt decoder helps identify published power fields; it does not predict acrylic thickness.

Save a preset with enough context to revisit it

Use separate names for separate sheets and machines in your records. Include the source URL and the date you read it, then write down which conditions the document actually states. Leave missing conditions visible.

The LightBurn Material Library guide explains saving a preset. Before copying a speed, use the unit converter to compare distance and time units. If a cut fails, the troubleshooting guide helps you record the failure before changing the setup.