FDM PMMA

About

Polymethyl Methacrylate (PMMA), commonly known as acrylic or plexiglass, is valued for its optical clarity, which makes it a strong choice for display cases, signage, or architectural models.

FDM-printed PMMA doesn't fully match the clarity of cast acrylic sheet, since layer lines scatter some light, but it's among the clearest results achievable in FDM printing.

PMMA is rigid and dimensionally stable, but it's also notably brittle. This is a well-known limitation, and the reason polycarbonate is often chosen instead when impact resistance is the priority.

It offers reasonable resistance to many everyday chemicals, though it's soluble in certain solvents. One of PMMA's most genuine strengths is UV resistance: it holds its clarity and color well under prolonged sun exposure without yellowing; it is therefore well suited to outdoor-facing display or signage applications.

Technical Details

Accuracy

±0.3% (lower limit of ±0.2 mm)

Density

1.17 g/cm³

Min. wall thickness

1 mm

Tensile strength

35 - 80 MPa

Tensile modulus

1800 - 3000 MPa

Tensile elongation

5 - 50%

Flexural strength

90 - 130 MPa

Flexural modulus

2500 - 3500 MPa

HDT (0.45 MPa)

70 - 89°C

HDT (1.8 MPa)

65 - 85°C

Default layer height

0.2 mm

Default infill

20%

Embossing

min. 0.5 mm

Engraving

min. 0.5 mm

Interlocking parts

Yes

Warping risk

High

Maximum printing dimensions

600 × 600 × 600 mm