PMMA vs PLA
Compare PMMA and PLA filaments side-by-side. See which one is best for your 3D printing project.
PMMA
CAcrylic / Plexiglass / Perspex
Best-in-class clarity; can be buffed/frosted/polished
PLA
APolylactic Acid
Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal
Detailed Comparison
Property
PMMA
PLA
Tier Rating
Tier C
Tier A
Family
PMMA
PLA
Nozzle Temp
230-260°C
185-235°C
Bed Temp
70-100°C
50-60°C
Enclosure
recommended
not needed
Cooling
Low to moderate
High part cooling usually beneficial
Moisture Sensitivity
moderate
moderate
Strengths Comparison
PMMA Strengths
- Best-in-class clarity; can be buffed/frosted/polished
- Good UV resistance
- Clarity and rigidity for display parts
PLA Strengths
- Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal
- Stiff non-composite thermoplastic, good tensile strength
Considerations
PMMA Caveats
- Terrible bed and layer adhesion; high thermal expansion; brittle
- Prints often fail during/after
- Can crack/warp; requires tuning
PLA Caveats
- Creeps under sustained load
- Poor heat resistance, UV degradation, can shatter on drops
- Not great for sanding/gluing/painting/touch-ups
Frequently Asked Questions
Is PMMA or PLA better for 3D printing?
PLA is generally rated higher (Tier A) compared to PMMA (Tier C). However, the best choice depends on your specific needs: PMMA is best for Best-in-class clarity; can be buffed/frosted/polished, while PLA is best for Easiest to print, cheap, widely available, fast, good bridges/overhangs, easy support removal.
What are the temperature differences between PMMA and PLA?
PMMA prints at 230-260°C nozzle / 70-100°C bed. PLA prints at 185-235°C nozzle / 50-60°C bed.
Do PMMA and PLA need an enclosure?
PMMA: recommended. PLA: not needed.
Which is more beginner-friendly: PMMA or PLA?
PLA is more beginner-friendly as it doesn't require an enclosure.