PC-ABS blend print settings

A polycarbonate/ABS blend: most of PC's heat and impact resistance, but it prints closer to ABS. An engineering material that needs a hot chamber.

Enclosure: Expect warping, splitting layers or failed prints without one.

Bed surface & adhesion

Smooth PEI or garolite with an ABS slurry or glue stick, and a chamber that stays warm from the first layer to the last.

Retraction starting points

Low retraction usually suffices; an enclosure also reduces stringing.

Good for

• Functional parts that see heat — enclosures, engine-bay brackets, tooling
• Impact-resistant parts that would be too brittle in plain PC

Watch out for

• Needs an all-metal hotend rated past 275 °C
• Warps and delaminates the moment the chamber cools — no draughts, no open front
• Styrene fumes: ventilate, or run it in a filtered enclosure
• Dry it — wet PC-ABS comes out foamy and weak

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.