3mm Clear Acrylic (Cast)

Equivalent to ~25mm/s. Boss Laser official settings reference (bosslaser.com/laser-settings/) lists 100W acrylic at ~40% power/15 speed in native units; cross-referenced with Pumping Station One Boss Laser wiki (wiki.pumpingstationone.org/wiki/Boss_Laser_Settings) and settingsmag.com chart. Low air pressure (8–12 PSI) for clear flame-polished edges on cast acrylic. Boss native speed units are relative (0–100 scale) — LightBurn mm/s equivalent is ~25mm/s.

Equivalent to ~400mm/s. High speed + low power for cast acrylic produces a bright frosted white engrave. DPI: 254–300 LPI. Source: LightBurn forum (forum.lightburnsoftware.com/t/acrylic-cutting-and-engraving/68186) and OMTech knowledge base (omtech.com/blogs/knowledge/material-settings-for-laser-engravers). Reduce power if engraving goes too deep.

Equivalent to ~20mm/s. Community consensus from LightBurn forum (forum.lightburnsoftware.com/t/omtech-80w-laser-won-t-cut-through-acrylic/110337) and CNCZone reports 18–22mm/s at 60–70% for clean single-pass cuts on cast acrylic. Use LOW air pressure (8–12 PSI) to avoid frosting the edge. Extruded acrylic may need 1 extra pass.

What are the best laser settings for 3mm Clear Acrylic (Cast)?

A top-rated community setting for 3mm Clear Acrylic (Cast) on the Boss LS-1630 is speed 1500 mm/min, power 60%. There are 3 community-tested settings for 3mm Clear Acrylic (Cast) across 2 machines on this page.

Do I need air assist for 3mm Clear Acrylic (Cast)?

100% of the community settings for 3mm Clear Acrylic (Cast) use air assist. Air assist is strongly recommended — it reduces charring and improves cut quality.

What speed and power to cut 3mm Clear Acrylic (Cast) in one pass?

Settings vary by machine wattage. For a 20W diode laser, cutting 3mm Clear Acrylic (Cast) typically requires high power (90–100%) at moderate speed (1500–3000 mm/min) with air assist. CO₂ lasers can cut 3mm material faster — 20–60 mm/s at 50–70% power is common. Check the settings table below for your specific machine.