PMMA vs ASA

Compare PMMA and ASA filaments side-by-side so you can pick the right one for your 3D printing project.

PMMA vs ASA: PMMA is known for best-in-class clarity, while ASA is known for excellent uv resistance (outdoors indefinitely). Both have recommended enclosure requirements; ASA prints at higher nozzle temperatures (220-275°C vs 230-260°C). Choose PMMA for best-in-class clarity, or ASA for excellent uv resistance (outdoors indefinitely).

Key differences at a glance

Property
PMMA
ASA
Nozzle temp
230-260°C
220-275°C
Bed temp
70-100°C
90-110°C
Enclosure needed
Recommended
Recommended
Ease of printing
Moderate
Moderate
Moisture sensitivity
moderate
moderate

PMMA

C

Acrylic / Plexiglass / Perspex

Best-in-class clarity; can be buffed/frosted/polished

ASA

A

Acrylonitrile Styrene Acrylate

Excellent UV resistance (outdoors indefinitely), tough, matte surface

Detailed Comparison

Property
PMMA
ASA
Tier Rating
Tier C
Tier A
Family
PMMA
ASA
Nozzle Temp
230-260°C
220-275°C
Bed Temp
70-100°C
90-110°C
Enclosure
recommended
recommended
Cooling
Low to moderate
Low to moderate; avoid drafts
Moisture Sensitivity
moderate
moderate

Green marks the generally easier or more forgiving option in that row, based on tier, enclosure needs, and moisture sensitivity. It is not always the better choice for a specific job, so weigh it against what your project actually needs.

Strengths Comparison

PMMA Strengths

  • Best-in-class clarity; can be buffed/frosted/polished
  • Good UV resistance
  • Clarity and rigidity for display parts

ASA Strengths

  • Excellent UV resistance (outdoors indefinitely), tough, matte surface
  • Less warping than ABS; low viscosity enables very high speed printing
  • High heat tolerance (~boiling water range)

Considerations

PMMA Caveats

  • Terrible bed and layer adhesion; high thermal expansion; brittle
  • Prints often fail during/after
  • Can crack/warp; requires tuning

ASA Caveats

  • Still off-gasses; enclosure/ventilation recommended
  • Can still warp; needs tuning

Frequently Asked Questions

What is the difference between PMMA and ASA?
PMMA prints at 230-260°C nozzle / 70-100°C bed (Recommended enclosure, moderate moisture sensitivity). ASA prints at 220-275°C nozzle / 90-110°C bed (Recommended enclosure, moderate moisture sensitivity).
Is PMMA or ASA stronger?
Our dataset does not include comparable tensile strength values for both. Qualitatively, PMMA is suited to best-in-class clarity, while ASA is suited to excellent uv resistance (outdoors indefinitely).
Which prints at a higher temperature, PMMA or ASA?
ASA prints at a higher temperature (220-275°C nozzle vs 230-260°C for PMMA).
Is PMMA or ASA better for beginners?
Both are similarly approachable: PMMA (recommended enclosure, moderate moisture) and ASA (recommended enclosure, moderate moisture).
Should I use PMMA or ASA for outdoor use?
For outdoor use, ASA is usually the better fit (Excellent UV resistance (outdoors indefinitely)). Choose PMMA instead when best-in-class clarity.

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