PMMA vs PETG
Compare PMMA and PETG 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
PETG
APolyethylene Terephthalate Glycol-modified
Tougher than PLA, higher temp tolerance, more durable in real-world use
Detailed Comparison
Property
PMMA
PETG
Tier Rating
Tier C
Tier A
Family
PMMA
PETG
Nozzle Temp
230-260°C
215-270°C
Bed Temp
70-100°C
70-90°C
Enclosure
recommended
optional
Cooling
Low to moderate
Moderate cooling; too much cooling can hurt layer adhesion
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
PETG Strengths
- Tougher than PLA, higher temp tolerance, more durable in real-world use
- Good clarity and low friction among easy-to-print materials
Considerations
PMMA Caveats
- Terrible bed and layer adhesion; high thermal expansion; brittle
- Prints often fail during/after
- Can crack/warp; requires tuning
PETG Caveats
- Overhangs/bridges sag; supports can be hard to remove
- Absorbs water fairly quickly
Frequently Asked Questions
Is PMMA or PETG better for 3D printing?
PETG 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 PETG is best for Tougher than PLA, higher temp tolerance, more durable in real-world use.
What are the temperature differences between PMMA and PETG?
PMMA prints at 230-260°C nozzle / 70-100°C bed. PETG prints at 215-270°C nozzle / 70-90°C bed.
Do PMMA and PETG need an enclosure?
PMMA: recommended. PETG: optional.
Which is more beginner-friendly: PMMA or PETG?
PETG is more beginner-friendly as it doesn't require an enclosure.