PMMA vs PETG
Compare PMMA and PETG filaments side-by-side so you can pick the right one for your 3D printing project.
PMMA vs PETG: PMMA is known for best-in-class clarity, while PETG is known for tougher than pla. PETG is easier to print; PMMA prints at higher nozzle temperatures (230-260°C vs 230-250°C). Choose PMMA for best-in-class clarity, or PETG for tougher than pla.
Key differences at a glance
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
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
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