The Plastic 24x12 inch Density Transparent Black Acrylic 2mm is an extended-format, optical-grade polymethyl methacrylate (PMMA / Plexiglass) rigid sheet engineered for large-bed laser cutting, CNC routing, electronic display panels, infrared (IR) sensor windows, and modern equipment housings. Measuring an expansive 24 × 12 inches (approx. 609.6 mm × 304.8 mm / 2 × 1 foot profile) with a slim, consistent 2.0 mm thickness, it provides high flexural strength, dimensional stability, and impact resistance while weighing less than half of equivalent mineral glass. Formulated with a specialized dense smoke-black tint, it appears semi-opaque and reflective under normal ambient lighting—effectively concealing internal wiring, circuit boards, and unlit display frames—while allowing illuminated OLED, LCD, vacuum fluorescent, and bright LED readouts, as well as optical infrared signals, to pass through with sharp contrast.

Specifications

• Material Type: Premium Cast / Extruded Polymethyl Methacrylate (PMMA / Acrylic / Plexiglass)
• Sheet Dimensions: 24 × 12 Inches (Approx. 609.6 mm × 304.8 mm / 2 Sq. Ft. Working Footprint)
• Nominal Thickness: 2.0 mm (±0.2 mm manufacturing gauge tolerance)
• Color / Optical Tint: Density Transparent Black / Smoked Gray (Translucent tinted acrylic)
• Surface Finish: Dual-Sided High-Gloss Mirror-Smooth Finish
• Visible Light Transmittance (VLT): Approx. 20% to 30% (Provides high ambient optical contrast for internal displays)
• Infrared (IR) Spectral Transmittance: High permeability across standard 850 nm to 940 nm optical infrared spectrum bands
• Tensile Strength: ≥ 68 MPa to 76 MPa
• Flexural Modulus: Approx. 3000 MPa to 3300 MPa
• Density: Approx. 1.18 g/cm³ to 1.20 g/cm³
• Heat Deflection Temperature (HDT): Approx. 85°C to 100°C (Softening point ~105°C)
• Continuous Working Service Temperature: -40°C to +80°C
• Surface Protection: Dual-sided protective peel-off kraft paper or clear polyethylene (PE) film masking
• Fabrication Compatibility: CO2 laser cutters/engravers, CNC flatbed routers, table saws, scoring blades, and localized thermal line heaters
• Net Weight: Approx. 440 g to 470 g per sheet

Features

• Large-Bed Fabrication Footprint: The 24×12 inch profile fits standard 600×300mm laser cutter beds, allowing batch nesting of multiple faceplates or single-pass cutting of extended equipment chassis panels without pre-cutting down stock.
• High-Contrast Display Window: Dense smoke tint masks internal mounting standoffs, bare PCBs, and unlit display bezels under ambient light, revealing only illuminated digits, graphics, and indicator lamps with minimal glare.
• Infrared (IR) Transparency: Readily transmits 850nm and 940nm near-infrared wavelengths, making it an ideal protective cover for IR receiver panels, remote control interfaces, and optical time-of-flight (ToF) sensor bezels.
• Clean Laser Cut Edges: Absorbs CO2 laser energy cleanly to vaporize along cut paths with virtually no soot or burrs, producing flame-polished, glass-like edge profiles straight from the cutting table.
• Thermoforming Pliability: Can be heated locally between 140°C and 160°C with a strip heater or heat gun to execute clean, permanent 90° bends for custom desktop bezels, angled meter housings, and display stands.

Common Applications

• Large Electronic Enclosures: Fabricating custom top, bottom, and side panels for DIY laboratory bench supplies, audio amplifiers, DACs, and synthesizer casings where a smoked-glass aesthetic is desired.
• Display Front Panels: High-contrast viewing bezels for OLED/LCD screens, 7-segment LED counters, and digital panel meters on industrial equipment consoles.
• Infrared (IR) Sensor Windows: Protective external plates for IR receiver modules, home automation hubs, security system panels, and robotic optical obstacle sensors.
• Custom PC & Case Modding: Smoked side-panel windows, custom cable-management covers, and illuminated accent plates for desktop PC builds.
• Scale Models & Architectural Exhibits: Precision laser-cut tinted windows, structural partitions, modern facade mockups, and illuminated signage boxes.

Usage Tips

• Protective Film Retention (CRITICAL):
  • Do not peel off the protective kraft paper or PE film prior to laser cutting, CNC routing, or drilling.
  • Keeping the film intact prevents vaporized acrylic residues, exhaust smoke condensates, and machine bed scratches from marring the glossy tinted surface. Strip the mask only after all machining, edge deburring, and drilling steps are completed.
• CO2 Laser Cutting Parameters:
  • Dark tinted acrylic absorbs 10.6 μm CO2 laser energy very efficiently; run at moderate travel speeds with active air assist (10 to 15 psi).
  • Air assist prevents flame flare-ups and clears vaporized gases from the kerf, ensuring clean, melted-glass edges without thermal distortion.
• Drilling Recommendations: Use specialized plastic drill bits (60° to 90° tip angle with a zero-to-negative rake) or lightly dull the cutting lips of standard twist drills. Always clamp a scrap piece of solid wood or MDF beneath the sheet to support the bottom face and prevent breakout cracking as the bit exits.
• Solvent Cementing Protocol: Standard cyanoacrylate (superglue) off-gasses during curing, causing unsightly white blooming and cloudiness on tinted surfaces. Use water-thin acrylic solvent cement (methylene chloride base) with a precision needle applicator to create clean, chemically welded joints.
• Cleaning & Maintenance Precautions: Never wipe acrylic with rubbing alcohol, acetone, lacquer thinner, or ammonia-based glass sprays. These chemical solvents attack the polymer chains, causing immediate micro-crazing, stress fractures, and surface clouding. Clean exclusively with lukewarm water, mild liquid dish soap, and a clean microfiber towel.