Bambu Lab Filament Guide: Settings for 6 Materials

Bambu Lab’s recommended settings: PLA Basic 190–230 °C; PETG HF 230–260 °C on a 65–75 °C bed; ABS and ASA 240–270 °C on 80–100 °C, enclosed printer only; PAHT-CF 260–290 °C with a hardened nozzle; TPU 95A HF 220–240 °C on a 30–35 °C bed, fed outside the AMS. Bambu Studio’s X1 Carbon presets sit inside those ranges.

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.

Use the selected Bambu Studio printer, nozzle and filament presets as the starting point, then check the manufacturer’s plate and filament instructions. The enclosure-dependent settings here concern the X1 Carbon and P1S; compare their hardware in our P1S vs X1 Carbon comparison. A1 owners should also read the A1 section below.

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.

Bambu Lab Filament Guide: What Each Material Needs

Whether a spool suits your printer comes down to enclosure, nozzle, AMS and drying. The table uses Bambu’s published specs as listed by US retailer 3D Universe, with that store’s 1 kg prices checked in September 2026.

Bambu marks ABS and ASA “Enclosure Printers Required” and PAHT-CF “Fully Enclosed Printer Required”, so on an open-frame A1 the working list is PLA, PETG HF and TPU, even though ABS costs less than PETG HF.

Bambu Studio adds its own AMS rules. Its built-in filament blocklist refuses TPU in an AMS slot (“TPU is not supported by AMS.”), warns that CF and GF blends “are hard and brittle” and can get stuck, and flags damp PVA and PLA Glow. Jams that happen anyway are covered in our AMS troubleshooting guide.

What Bambu Studio’s Presets Actually Set

The preset is the single number the slicer loads, and it changes with the printer. These values come from the filament preset files in Bambu Studio’s GitHub repository, checked in September 2026 (current release: v02.08.02.61). Bed figures are for Textured PEI.

Max volumetric speed is a hard ceiling. A Bambu support post on the official forum confirms that above it “the slicer will automatically reduce print speed.” Divide the cap by layer height × line width: at 0.2 mm layers and the default 0.42 mm outer-wall line, Bambu PLA Basic’s 21 mm³/s allows about 250 mm/s, above the 200 mm/s outer wall in the stock 0.20 mm Standard process. PAHT-CF’s 8 mm³/s works out to about 95 mm/s, in line with Bambu’s “under 100 mm/s” guidance.

A bed temperature of 0 means “not supported”. Bambu Studio’s own tooltip reads “Value 0 means the filament does not support to print on the Textured PEI Plate”, and the other plate fields work the same way. The PETG HF, ABS and ASA presets all set the Cool Plate to 0.

How to Change Filament Settings in Bambu Studio

1. Set the printer and nozzle first. Filament presets are machine-specific; the A1 version of Bambu PLA Basic lists only A1 nozzles as compatible.
2. Pick the matching preset. On Bambu spools “all printing parameters are embedded in RFID” for the AMS to read, per the PLA Basic listing. For other brands, start from the Generic preset, which Bambu calls “conservatively tuned for compatibility with a wider range of filaments.”
3. Edit one group at a time: nozzle, bed per plate, cooling, then max volumetric speed.
4. Save under a new name so the system preset stays as a baseline.
5. Calibrate in the tuning order below, and re-check after updates: v02.08.02.61 alone lists “Updated presets for X2D and H-series printers.”

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: Bambu’s Textured PEI plate table lists 45–60°C for PLA. For Smooth PEI, use its plate-specific material table and the matching slicer preset. Do not transfer a Cool Plate temperature to PEI.

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 on smooth PEI with a release agent (Magigoo PETG or hairspray). Bambu lists 65–75°C for PETG HF on either plate, and its presets use 70°C, so there is no reason to run smooth PEI hotter.

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

The following enclosure-dependent settings are for the X1C and P1S.

Temperature

• Nozzle: 240–270°C, Bambu’s published range for both ABS and ASA; Bambu Studio’s presets run 270°C.
• Bed: Bambu lists 80–100°C with glue. Stay at or below the P1S’s 100°C maximum.
• Chamber: Both the X1C and P1S are passively warmed by the heated bed. The X1C has an auxiliary part-cooling fan, not an auxiliary heater or an active chamber-temperature setting.

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: Start with the selected filament and plate preset. On the P1S, keep the bed at or below its 100°C maximum, including the first layer.

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, so 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 compatible hardened-steel hotend for the exact printer model. Follow Bambu’s Hotends/Nozzles reference and the filament’s supported nozzle diameter; stainless steel and hardened steel are different options. For its own PAHT-CF, Bambu prefers a 0.6 mm hardened nozzle and rules out 0.2 mm.
2. Dried filament: nylon is highly hygroscopic. Bambu specifies 80°C for 8–12 hours in a blast drying oven before printing.
3. High temperature: Bambu lists 260–290°C nozzle and 80–100°C bed for PAHT-CF. The X1C and P1S preset runs 290°C on a 100°C bed.

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

Bambu lists PAHT-CF as AMS compatible, but Bambu Studio flags every CF and GF filament in an AMS slot as brittle and liable to break or jam. Loading direct to the toolhead avoids that risk.

TPU (Flexible Filaments)

95A Shore TPU settings:

• Nozzle: 220-240°C, Bambu’s range for TPU 95A HF; its presets use 230°C.
• Bed: 30-35°C per the same listing. The A1 preset raises it to 45°C.
• Speed: 30-50mm/s maximum for generic TPU. TPU cannot be printed fast: the material pillows and doesn’t retract predictably at speed. Bambu Studio’s Generic TPU preset agrees, capping flow at 3.2 mm³/s, about 38 mm/s at a 0.2 mm layer and 0.42 mm line. Bambu’s TPU 95A HF is the exception: its preset allows 12 mm³/s and the listing says under 200 mm/s.
• Retraction: Minimal. TPU stretches on retraction and often causes more issues than it solves. Bambu’s generic TPU profile retracts 0.4mm and the TPU 95A HF presets use 0.8mm; stay at or below those.

Load TPU direct to toolhead, not through AMS; Bambu Studio refuses TPU in an AMS slot. The exception is Bambu’s TPU for AMS, a harder 68D grade built for the AMS and AMS lite.

Bambu A1 and A1 Mini: What Changes

The A1’s hotend reaches 300 °C and its bed 100 °C, per 3DPut’s spec table, so the open frame, not heat, is the limit; see our A1 specifications and recall history. Don’t copy X1C numbers across: the A1 rows in the preset table give PLA Basic a hotter bed and less fan, and PETG HF a lower flow cap. The A1 mini PLA preset uses 65°C on textured PEI and 60°C on smooth. The A1’s 0.20 mm Standard process keeps the 200 mm/s outer wall but cuts default acceleration to 6,000 mm/s² from the X1C’s 10,000.

Bambu Studio even ships a Bambu ABS preset for the A1 (100°C bed, part fan capped at 20%), yet Bambu’s ABS and ASA listings say an enclosed printer is required; treat it as a small-part fallback. The mini’s lower bed ceiling is in the A1 vs A1 mini comparison, and what an enclosure buys you is in A1 vs P1S.

Quick Reference Table

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.

FAQ

Can the Bambu Lab A1 print ABS or ASA?

Technically yes, but not reliably. The A1’s hotend reaches 300 °C and its bed 100 °C, and Bambu Studio even includes an A1 ABS preset with a 100 °C bed and the part fan capped at 20%. Bambu’s ABS and ASA listings say an enclosed printer is required, so larger parts belong on a P1S or X1 Carbon.

Can you put TPU in the Bambu AMS?

Not standard TPU. Bambu Studio refuses TPU in an AMS slot with the warning “TPU is not supported by AMS,” and Bambu lists TPU 95A HF as AMS-incompatible. Feed it from the external spool holder instead. The exception is Bambu’s TPU for AMS, a stiffer 68D grade sold specifically for the AMS and AMS lite.

Why does generic filament print slower in Bambu Studio?

Because Generic presets carry lower flow caps. Generic PLA and Generic PETG allow 12 mm³/s against 21 mm³/s for Bambu PLA Basic, and Bambu Studio slows any feature that would exceed the cap. At 0.2 mm layers and a 0.42 mm line, a 200 mm/s outer wall drops to about 143 mm/s. Flow-test a spool before raising it.

Does Bambu Lab filament need a hardened nozzle?

Only the abrasive grades do. Bambu lists PLA Basic, PETG HF, ABS and ASA for any nozzle size or material, while PAHT-CF needs hardened steel, ideally 0.6 mm and never 0.2 mm. TPU 95A HF runs on hardened steel from 0.4 to 0.8 mm or on a stainless 0.4 mm nozzle, so check before swapping sizes.

Related on this site

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