CPE Filament

Co-Polyester

B
Also known as:Copolyester
Family:CPE

Why Use CPE?

  • 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

Things to Consider

  • 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

CPE Variants

CPE+

Benefits:

  • + Tougher than standard CPE and better under prolonged chemical exposure

Caveats:

  • - Aimed at more demanding work; costlier and harder to source than standard CPE

Technical Data

Hardware Requirements

Enclosure
Not Needed
Drybox
Not Needed
Hardened Nozzle
Not Needed

Bed Surface Compatibility

Textured PEI
Satin PEI
Smooth PEI
PA/Nylon Sheet
Polypropylene
High Temp

Hover over icons for details. Always use proper release agents when needed.

Physical Properties

Heat Deflection75 C
Impact ResistanceN/A
Tensile StrengthN/A

Values may vary by brand and printing conditions.

Frequently Asked Questions

What is CPE filament?
CPE (Co-Polyester) is a 3D printing filament. Better chemical resistance than PETG; holds up to alcohols, water, acids, and bases
What temperature should I print CPE at?
CPE typically prints at nozzle temperatures of 275°C and bed temperatures of 90°C. Moderate cooling; too much cooling hurts layer adhesion
Do I need an enclosure to print CPE?
No enclosure is needed for printing CPE.
What is CPE filament best for?
CPE is best for: 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.
What are the downsides of CPE filament?
The main considerations when using CPE: 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.