What each material needs, what it's good for, and which printers can handle it. Sorted from easiest to most demanding.
| Material | Difficulty | Temp (hotend) | Temp (bed) | Enclosure needed | Printers |
|---|---|---|---|---|---|
| PLA | Easy | 190–240°C | 55–65°C | No | All (incl. A2L) |
| PETG | Easy | 240–270°C | 60–80°C | No | All (incl. A2L) |
| TPU | Medium | 200–250°C | 35–45°C | No | All (direct drive) |
| ABS | Medium | 240–280°C | 90–100°C | Yes | P1S, P2S, X1C, X2D, H2S, H2D, H2C |
| ASA | Medium | 240–280°C | 90–100°C | Yes | P1S, P2S, X1C, X2D, H2S, H2D, H2C |
| PLA-CF / PETG-CF | Medium | 210–240°C (PETG-CF: 240–270°C) | 55–80°C | No (ABS-CF: Yes) | A2L, P2S, X1C, X2D, H2S, H2D, H2C (hardened nozzle; Bambu: not recommended on the A1 and P1 series) |
| PA (Nylon) | Hard | 240–280°C | 100–120°C | Yes (+ chamber) | P1S (Bambu: capable), P2S, X1C, X2D, H2S, H2D, H2C |
| PA-CF | Hard | 260–300°C | 100–120°C | Yes (active chamber helps) | P2S, X1C, X2D, H2S, H2D, H2C (hardened nozzle) |
| PC | Hard | 260–290°C | 100–120°C | Yes (active chamber helps) | P1S, P2S, X1C, X2D, H2S, H2D, H2C |
Hotend ranges: Bambu Lab filament material table (listed with a ±10°C tolerance). Plain PA is not in that table; its range is from Bambu Studio's Generic PA profile.
Looking for filament? Our tested picks → Product links in this guide are affiliate links; we may earn a small commission at no extra cost to you.
PLA (Polylactic Acid) is the default material for a reason. It's easy to print, widely available, produces minimal fumes, and the print quality is excellent. PLA+ is a modified formula with improved impact resistance and flexibility, worth the small price premium for functional parts.
Printing cookie cutters, kitchen helpers, or kids' toys? See Bambu PLA Pure, a food-contact PLA built from five EU 10/2011 compliant ingredients.
Our PLA pick: eSUN PLA+, best price-to-performance with a huge color range. View on Amazon → Affiliate link. We may earn a commission at no extra cost to you.
| PLA Settings | |
|---|---|
| Hotend temp | 190–240°C |
| Bed temp | 55–65°C |
| Print speed | Up to 300 mm/s practical |
| Cooling fan | 100% (after layer 3) |
| Enclosure | Not needed (open door/top if enclosed) |
| Nozzle | Standard stainless |
| Bed adhesion | Clean PEI, no glue needed |
| Moisture sensitivity | Low |
On the P1S/P2S/X1C, keep the top panel open or cracked when printing PLA. The chamber can get warm enough to soften PLA during long prints. Not always an issue, but opening it ensures proper cooling.
PETG (Polyethylene Terephthalate Glycol) sits between PLA and ABS in most properties. Better heat resistance than PLA (up to ~80°C), more flexible and impact-resistant than PLA, no warping issues, and prints without an enclosure. It's the second go-to material for most practical parts.
Our PETG pick: Sunlu PETG, cheap and reliable for functional parts. View on Amazon → Affiliate link. We may earn a commission at no extra cost to you.
| PETG Settings | |
|---|---|
| Hotend temp | 240–270°C (PETG HF: 230–260°C) |
| Bed temp | 60–80°C |
| Print speed | 150–250 mm/s practical |
| Cooling fan | 50–80% (less than PLA) |
| Enclosure | Not needed |
| Nozzle | Standard stainless |
| Bed adhesion | Glue stick on PEI (prevent over-adhesion) |
| Moisture sensitivity | Medium. Dry before use if stored open. |
TPU (Thermoplastic Polyurethane) is the flexible filament of choice. Shore hardness varies: 95A is slightly flexible (like a phone case), 85A is very flexible (like a soft rubber band). Bambu printers handle TPU well thanks to the direct drive extruder. The short filament path from gear to nozzle reduces the buckling that makes TPU difficult on Bowden setups.
Standard TPU cannot be pushed fast. Bambu Studio's Generic TPU profile caps flow at 3.2 mm³/s, roughly 35–40 mm/s at 0.2 mm layers with a 0.4 mm nozzle. Bambu's own TPU 95A HF (12 mm³/s) and TPU for AMS (18 mm³/s) are made to run faster. Higher speeds cause under-extrusion as the flexible filament buckles under extrusion pressure. Reduce retraction distance (too much retraction pulls the soft filament back into the gears).
Our TPU pick: Overture TPU 95A, flexible; feed it from the external spool, not through the AMS (Bambu: TPU 95A is too soft for the AMS path; for TPU in the AMS use Bambu's TPU for AMS). View on Amazon → Affiliate link. We may earn a commission at no extra cost to you.
ABS (Acrylonitrile Butadiene Styrene) has better heat resistance than PLA (up to ~100°C) and is tougher and more machinable. It's the material LEGO bricks are made from. The downside: it warps aggressively and off-gasses unpleasant fumes during printing.
ABS requires an enclosed printer with passive or active chamber heating. On the P1S/P2S/X1C, which have no chamber heater, the bed warms the chamber: close the door and, in a cold room, preheat the bed to its maximum temperature for 15 minutes before starting (Bambu's ABS guide recommends this for the X1C and P1S). Printers with a chamber heater (H2 series, X2D, X1E) switch it on for ABS by default (same guide); Bambu Studio's ABS profiles target 60°C on the H2S and 65°C on the H2D, H2D Pro, H2C and X2D, so there is nothing to set by hand.
ABS produces styrene vapour and fine particulates during printing. Always use an enclosed printer with a filter: activated carbon on the P1S, P2S and X1C, carbon plus an H12 HEPA stage on the X2D and H2 series. Don't print ABS on an open-frame machine in an enclosed room. Ensure the room has some ventilation even with an enclosed printer.
Consider switching to ASA for outdoor/UV-exposed parts. It's easier to print than ABS with better UV stability. For indoor parts where UV doesn't matter, ABS remains a solid choice.
ASA (Acrylonitrile Styrene Acrylate) is ABS's outdoor cousin. Similar mechanical properties, similar print requirements, but with much better UV resistance. Outdoor parts that get direct sunlight (garden clips, car exterior parts, outdoor enclosures) are better printed in ASA than ABS or PETG.
Most experienced users find ASA slightly easier to print than ABS: marginally less warp-prone and a bit more forgiving of temperature variations. Same enclosure requirements apply.
If it will see sunlight: use ASA. If it's an indoor part: ABS or ASA are both fine (ASA slightly easier). For high-impact applications: ABS-CF or ASA-CF composites add significant rigidity.
Carbon fibre (CF) and glass fibre (GF) filled filaments add short fibres to a base polymer (PLA, PETG, ABS, ASA, PA, etc.) to increase stiffness and reduce weight. They're not "carbon fibre" in the structural sense; they're composites with chopped CF strands that improve rigidity and dimensional stability.
CF filaments are highly abrasive. A standard stainless steel nozzle will visibly wear within a few hundred grams of CF filament: the orifice diameter increases, causing under-extrusion and poor quality. Always use a hardened steel or tungsten carbide nozzle for any CF or GF filament. Bambu sells hardened nozzles; so do CHT and other third parties. Bambu's spec sheets rate carbon- and glass-fiber filaments Not Recommended on the A1, A1 mini, P1S and P1P; the A2L takes PLA-CF and PETG-CF once you fit a hardened steel nozzle.
Hardened nozzle picks (Bambu still rates CF/GF filaments Not Recommended on the P1 and A1 series): For P1P/P1S, the E3D ObXidian 0.6mm High Flow. View on Amazon → For A1/A1 Mini, the IdeaFormer 0.4mm hardened steel 5-pack. View on Amazon → Affiliate link. We may earn a commission at no extra cost to you.
Our CF pick: Priline CF polycarbonate, strong and stiff. Note what it is: carbon-filled PC, not PETG. It wants a hardened nozzle, an enclosure and roughly 270 to 300°C, which makes it an H-series or X-series material rather than an A1 one. View on Amazon → Affiliate link. We may earn a commission at no extra cost to you.
If you've been printing CF through a nozzle, don't then use it for precision PLA printing: the enlarged orifice will cause over-extrusion. Keep dedicated nozzles for abrasive and non-abrasive materials, or replace before switching.
| Filament | Base material | Printers | Notes |
|---|---|---|---|
| PLA-CF | PLA | A2L, P2S, X1C, X2D, H2S, H2D, H2C (hardened nozzle) | Easiest CF. Good for rigid display parts. |
| PETG-CF | PETG | A2L, P2S, X1C, X2D, H2S, H2D, H2C (hardened nozzle) | Better heat resistance than PLA-CF. Popular for functional parts. |
| ABS-CF | ABS | Enclosed only | Needs enclosure. Very stiff. Common for engineering brackets. |
| ASA-CF | ASA | Enclosed only | Like ABS-CF but UV-stable. Great outdoor functional parts. |
| PA-CF | Nylon (PA) | P2S, X1C, X2D, H2S, H2D, H2C | Highest performance. Best with an actively heated chamber. |
Nylon (Polyamide, PA) is a family of engineering materials. PA6, PA12, PA11, with excellent toughness, chemical resistance, and fatigue life. Gears, hinges, load-bearing brackets, and parts that flex repeatedly are classic nylon applications.
Moisture: Nylon is hygroscopic. It absorbs moisture from the air rapidly and the absorbed water causes bubbling, weak layer adhesion, and poor surface finish when printing. Always print from a dry box or dryer. Dry new spools before their first use (80°C, 8+ hours). Store sealed with desiccant.
Enclosure requirements: Nylon needs a warm enclosure to prevent delamination. The passive chambers of the P1S/P2S can handle some PA grades but are marginal. For serious PA work, especially PA6 or PA-CF: the H2S's 65°C active chamber gives consistent, reliable results.
Bed adhesion: Nylon doesn't love PEI. Use glue stick, PEI with glue, or dedicated nylon build plates. A brim is almost always necessary.
Polycarbonate is one of the toughest 3D printing materials available. Excellent heat resistance (up to 130°C), impact resistance far beyond ABS or Nylon, and optical clarity in transparent grades. Used for protective housings, lenses, and high-impact structural parts.
PC requires high extrusion temperatures (260–290°C), a heated bed at 100–120°C, and a hot chamber. The actively heated machines hold that most reliably: the X2D, H2S, H2D and H2C. Bambu also lists PC for the P1S, P2S and X1C, but their passive chambers are not held at temperature, so expect more tuning and a higher risk of delamination there.
PC shrinks significantly on cooling. Print speeds must be conservative, the chamber must be pre-heated fully before the print starts, and cooling fans should be minimal or off. Even on capable machines, PC requires careful dialling in. Don't expect first-print success.
Moisture in filament is the cause of more print failures than people realise. Symptoms: crackling sounds during extrusion, bubbles in the extrusion, weak layer adhesion, rough surface finish, and excessive stringing.
Full comparison of dryers and dry storage: Best filament dryers for Bambu Lab.
| Material | Temperature (drying oven) | Time |
|---|---|---|
| PLA | 50°C | 8 hours |
| PETG | 60–65°C | 8 hours |
| ABS / ASA | 75–85°C | 8 hours |
| TPU | 70°C | 8 hours |
| PA (Nylon) | 75–85°C | 8–12 hours |
| PC | 75–85°C | 8 hours |
| PVA | 75–85°C | 8–12 hours |
Values: Bambu Lab drying guide, forced-air oven column (wiki.bambulab.com). Bambu's filament material table gives slightly different single values for some materials (PLA 55°C, PETG 70°C, PVA 55°C). In an AMS 2 Pro or AMS HT, Bambu lists longer drying times, for example PLA at 45°C for 12 hours and PETG at 65°C for 12 hours.
A food dehydrator ($30–60) works well. Purpose-built filament dryers (Bambu, Sunlu, eSUN) are also good. Your kitchen oven is a last resort: it's difficult to maintain accurate low temperatures and can warp spools.
Recommended dryer: SUNLU FilaDryer S2, a purpose-built dryer that dries while printing. View on Amazon → Affiliate link. We may earn a commission at no extra cost to you.
Store spools in resealable bags or airtight boxes with silica gel desiccant. Color-indicator desiccant tells you when it needs replacing. For PA and PC specifically, store in the original sealed bag until ready to print and run from a dry box actively during the print.
| Nozzle type | Good for | Avoid with | Notes |
|---|---|---|---|
| Stainless steel (stock) | PLA, PETG, TPU, ABS | Any CF/GF filament | Wears rapidly with abrasive filaments. |
| Hardened steel | PLA-CF, PETG-CF, ABS-CF, ASA-CF | N/A | Best all-rounder for abrasive filaments. Small flow reduction vs stainless. |
| Tungsten carbide | PA-CF, PC-CF, abrasive filaments | N/A | Maximum durability. More expensive but lasts much longer than hardened steel. |
| 0.4mm (stock size) | Most prints | Ultra-fine detail | Best balance of speed and detail. |
| 0.2mm | Fine detail, miniatures | CF filaments (clogs) | Slow. Use for detail-critical parts only. |
| 0.6mm | Large structural parts, fast prints | Fine detail | Prints 2–3× faster than 0.4mm for same layer height. |
| 0.8mm | Vases, large low-detail parts | Anything requiring detail | Very fast but coarse. |