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Choose by the print job

Choose your filament material by what could make the part or printer fail

Start with regular PLA for indoor models and organizers. Move to PETG when a bracket or workshop fixture needs more toughness or warmth tolerance. Use ASA for outdoor UV or summer-car parts when your printer setup can control enclosure and ventilation. Choose TPU 95A for flexible parts, and plan an external feed path for AMS Lite.

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Hardware and environment blockers

Check what can veto the material before you print.

These are starting points, not universal material ratings. Follow the exact filament, printer, feeder, and build-plate instructions for the setup you have.

ConstraintPLAPETGASATPU 95A
Parked car or direct sunAvoid parts that may see heat near the material's softening range, especially under load. Check the exact product data.Check the product's heat data and the part's load and geometry; glass transition alone is not a service-temperature limit.Consider it for outdoor UV or warmer environments only when your printer can support its enclosure and ventilation needs.Flexibility changes the part's support under load; use material data for the actual temperature and job.
Closed Bambu AMSMeasure the exact spool. AMS 2 Pro lists 50–68 mm width and 197–202 mm diameter; follow its manual for cardboard rims.Check dimensions and the cardboard rim separately from the PETG profile.Check dimensions and spool condition; the filament's material does not confirm feeder fit.Ordinary TPU 95A is not the AMS feed choice; use an external path. Bambu's separate AMS-rated TPU is a different product.
Bambu AMS LiteCheck 40–68 mm width and 53–58 mm inner hub diameter against the spool you receive.Measure the actual spool width and hub; cardboard alone does not confirm fit.Check dimensions and printer limits; an open A1 frame is not an ASA enclosure.Use an external feed path for ordinary TPU 95A.
Open-frame printer in a bedroom or living spaceA common starting choice for indoor models; use its exact profile and printer guidance.Check the printer profile, part geometry, and room setup for the exact product.Plan an enclosure and ventilation outside occupied sleeping areas; see NIOSH guidance for 3D printing.Check the feed path and profile; flexible filament may need a printer-specific loading route.
Smooth PEI or bare glassFollow the plate maker's cleaning and release directions; let the part cool as directed.Can bond strongly to smooth surfaces. Use the plate maker's release instructions to avoid damaging the sheet.Check the plate maker's release method and the filament instructions for the chosen surface.Check the plate maker's release method; adhesion depends on the exact surface and filament.
Sustained constant loadAccount for gradual deformation under load and possible brittleness in the design.May offer more toughness, but can still creep under a sustained load.Can suit rigid parts where heat or UV matters, but validate the part's geometry and load.Use when the part should flex; it is not a substitute for a rigid bracket.

AMS 2 Pro publishes 50–68 mm width and 197–202 mm diameter; AMS Lite publishes 40–68 mm width and 53–58 mm hub diameter. For cardboard rim and dryer handling, use our cardboard spool guide. Those dimensions describe these named feeders; check the manual for other models.

Four useful starting points

Open the guide that matches the job.

Each page covers the product line, setup requirements, and the conditions that make another material a better fit.

Next steps

For cardboard spool measurements, compare Bambu AMS, AMS Lite, and dryer fit. For drying, start with the filament dryer guide; to store filament after drying, read the vacuum storage and desiccant guide. For print symptoms, use the PETG moisture and settings checklist. Compare materials by the part in the filament-by-job matrix, and check spool dimensions in the printer-path compatibility matrix.