CPE vs PETG
Compare CPE and PETG filaments side-by-side so you can pick the right one for your 3D printing project.
CPE vs PETG: CPE is known for better chemical resistance than petg, while PETG is known for tougher than pla. CPE is easier to print; CPE prints at higher nozzle temperatures (275°C vs 230-250°C). Choose CPE for better chemical resistance than petg, or PETG for tougher than pla.
Key differences at a glance
CPE
BCo-Polyester
Better chemical resistance than PETG; holds up to alcohols, water, acids, and bases
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
CPE Strengths
- Better chemical resistance than PETG; holds up to alcohols, water, acids, and bases
- Tough and ductile with strong impact resistance; bends where PLA would snap
- Heat resistant to roughly 75°C plus UV resistance, so it survives outdoors
- Low moisture uptake and minimal shrink/warp for an engineering material
- Strong layer adhesion suits thin-walled models and parts under mechanical stress
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
CPE Caveats
- Bonds hard to the build plate; the wrong sheet can be damaged on part removal
- Around 275°C at the nozzle rules out PTFE-lined hotends
- Less widely stocked and pricier than PETG for a modest step up in performance
PETG Caveats
- Overhangs/bridges sag; supports can be hard to remove
- Absorbs water fairly quickly