Bambu Lab Filament Guide: Settings for 6 Materials

Bambu Studio ships with built-in profiles for common filaments, and for most users, those profiles work out of the box. But when you’re pushing speed limits, dialing in a specific brand, or troubleshooting quality issues, understanding what each parameter does matters.

These settings are based on documented Bambu profiles and community testing for the X1 Carbon and the machines in our P1S vs X1 Carbon comparison. A1 Mini users should note that the lack of enclosure affects ASA/ABS settings significantly.

For a quick nozzle and bed temperature, AMS-safety, drying, and hardened-nozzle lookup on any material for your specific model, our Bambu picker and filament-settings tool returns the published numbers without scrolling the whole guide.

PLA Settings

Bambu Lab’s generic PLA profile is a good starting point. These are the parameters worth adjusting from defaults:

Temperature

• Nozzle: 220°C is safe for most PLA. For brand-specific behavior, drop to 210°C if you see excessive stringing; increase to 225°C if layer adhesion is poor.
• Bed: 55°C on smooth PEI, 35°C on textured PEI. The textured plate has more mechanical grip so you need less thermal adhesion.

Speed

At 200mm/s with vibration compensation enabled, most PLA prints well on both the P1S and X1C. If you see ringing at corners, drop to 150mm/s on outer walls (inner walls and infill can stay fast).

Key speed parameters:

• Outer wall: 150-200mm/s
• Inner wall: 200-300mm/s
• Infill: 250-350mm/s
• First layer: 50mm/s (don’t speed this up)

Cooling

PLA needs aggressive cooling for small features and overhangs. Set part cooling fan to 100% by layer 3. On small cross-sections (single-wall towers, thin brackets), the full 100% fan is what prevents drooping.

PETG Settings

PETG is trickier than PLA because of its tendency to string and its high bed adhesion.

Temperature

• Nozzle: 240-250°C. Lower temps increase stringing.
• Bed: 70°C on textured PEI (the easier option) or 85°C on smooth PEI with a release agent (Magigoo PETG or hairspray).

Critical: Don’t print PETG on smooth PEI without a release agent. It will stick hard enough to damage the plate on removal.

Speed

PETG should be printed slower than PLA, especially on outer walls:

• Outer wall: 80-120mm/s
• Inner wall: 150-200mm/s
• Infill: 200-250mm/s

The slower outer wall speed is critical for stringing. PETG strings because it’s still viscous when the nozzle moves — giving it less time in open air reduces this.

Cooling

Less aggressive than PLA: start cooling fan at 30-50%, increasing to 70% on overhangs and bridges. Full fan on PETG can cause layer delamination on enclosed printers.

Retraction

PETG benefits from slightly increased retraction vs. PLA. In Bambu Studio with the default Bambu extruder: 0.8-1.2mm retraction. If you’re seeing ooze-based zits on outer walls, increase to 1.4mm.

ASA / ABS Settings

These materials require the enclosure. The following are for X1C and P1S only — not the A1 Mini.

Temperature

• Nozzle: 250-260°C
• Bed: 100°C on smooth PEI or Garolite
• Chamber: 35-45°C. On the X1C, enable the aux heater. On the P1S, close all panel access points before starting to retain ambient heat.

Warping Prevention

ASA/ABS warping is the main challenge. Mitigation strategies:

1. Brim: Add a 4-6mm brim on parts with small contact areas or sharp corners.
2. Draft shield: Bambu Studio’s draft shield keeps ambient warmth around the part.
3. First layer slow: 30-40mm/s on the first layer with 105°C bed.

Part footprint is the variable none of those three settings can fix. Warping force grows with the length of the cooling edge, so a bracket that spans most of a 256 mm plate fights back far harder than the same geometry scaled down — the per-model build volumes and bed sizes are worth checking before you commit a large ASA part to a machine whose plate leaves it no margin.

Ventilation

Both ABS and ASA produce styrene fumes. Run in a well-ventilated area or with an activated carbon filter. The X1C’s enclosure retains fumes; don’t open the front door mid-print.

PA-CF (Carbon Fiber Nylon)

For PA-CF you need:

1. A hardened nozzle (0.4mm CHT or Bambu’s hardened brass) — standard brass will wear out in a few spools
2. Dried filament — nylon is highly hygroscopic. Dry at 80°C for 8+ hours before printing
3. High temperature: 280-290°C nozzle, 50-60°C bed on PEI

This material is unforgiving. Inconsistency in drying will cause bubbling and layer gaps that look like calibration issues but aren’t.

PA-CF should not run through the AMS. Load direct to toolhead.

TPU (Flexible Filaments)

95A Shore TPU settings:

• Nozzle: 220-235°C
• Bed: 40-50°C
• Speed: 30-50mm/s maximum. TPU cannot be printed fast — the material pillows and doesn’t retract predictably at speed.
• Retraction: Minimal to none. TPU stretches on retraction and often causes more issues than it solves. Set to 0-0.5mm.

Load TPU direct to toolhead, not through AMS.

Quick Reference Table

Material	Nozzle °C	Bed °C	Outer Wall mm/s	Enclosure Needed
PLA	215-225	55	150-200	No
PETG	240-250	70-85	80-120	No
ASA	250-260	100	60-100	Yes
ABS	240-255	100	60-100	Yes
PA-CF	280-290	50-60	50-80	Yes
TPU 95A	220-235	45	30-50	No

Tuning Order of Operations

When dialing in a new filament or brand, tune in this order:

1. First layer adhesion — get bed temp, first-layer speed, and Z-offset right before anything else
2. Temperature — run a temperature tower to find the sweet spot for stringing vs. layer adhesion
3. Speed — increase from conservative until quality degrades, then back off 20%
4. Cooling — tune fan settings to the specific material behavior
5. Retraction — adjust last; retraction problems often disappear after temperature is properly set

Before tuning these per-material numbers, make sure your first layer and per-filament calibration are solid — our first-layer & calibration guide covers the fix order, and common print failures maps symptoms to causes when a print goes wrong. For deep dives on specific slicer settings within Bambu Studio — including support structures, infill patterns, and adaptive layer height — SlicerGuide has Bambu Studio-specific walkthroughs.

Two Things That Override These Numbers

The plate under the part. Bed temperature only means something in combination with the surface it is heating. PETG on smooth PEI at 80°C will bond hard enough to tear the coating; the same material on textured PEI releases cleanly. Check the settings above against the build plate guide before you trust a bed number in isolation.

The hotend’s flow ceiling. Every speed in this guide assumes the hotend can melt plastic fast enough to feed it. That ceiling is volumetric — cubic millimetres per second — and it is set by nozzle diameter and material, not by the speed field in the slicer. Run the volumetric flow and speed sizer for your nozzle, material and layer height; if your target wall speed exceeds what it returns, you get under-extrusion rather than a faster print. The nozzle sizes guide covers the diameter change that actually lifts the ceiling.

If a filament refuses to settle on these defaults, the next step is a calibration tower rather than another guess. OrcaSlicer’s calibration suite exposes temperature, flow rate and pressure advance as individual test prints, which converges faster on an unknown third-party spool than nudging a Bambu Studio profile does.

Related on this site

• Best Filament for Bambu Lab A1: PLA, PETG HF, TPU