PETG + carbon fibre print settings

PETG with chopped carbon fibre. Keeps PETG's toughness and chemical resistance, adds stiffness and a matte finish, and strings far less.

Enclosure: Works open, but an enclosure improves layer bonding and cuts warping.

Bed surface & adhesion

Textured PEI works well. On smooth PEI or glass use a glue stick as a release agent — PETG can bond hard enough to tear the sheet.

Retraction starting points

Prone to stringing — favour the higher distance, raise travel speed, and dry the filament if it has absorbed moisture.

Good for

• Functional outdoor parts — tough, stiff and UV-tolerant
• Brackets and mounts that would flex in plain PETG

Watch out for

• Highly abrasive — hardened steel nozzle required
• Dry it before every print; wet PETG-CF pops, strings and prints rough
• 0.6 mm nozzle strongly preferred
• Still bonds aggressively to smooth build surfaces — use a release agent

Problems this material is prone to

Other filaments

These are widely-published starting points for the generic material, not a specification. Individual spools vary by brand, colour and additive package — always defer to the figures printed on your spool.