Skip the Bambu Lab A1? Enclosed 3D Printers

Yes, for many users the Bambu Lab A1 is worth skipping in favor of an enclosed 3D printer, especially if you print engineering materials like ABS or ASA, need consistent chamber temperatures, or want to reduce warping and odor. The A1 is an open-frame, bed-slinging printer that excels at PLA and PETG, but an enclosed printer—whether from Bambu Lab (like the X1C or P1S) or another brand—offers a controlled environment that expands your material options and improves reliability for advanced filaments.

Why Enclosure Matters

An enclosed 3D printer has a sealed chamber around the build area. This simple addition has a big impact on print quality and material compatibility. The chamber traps heat from the heated bed, raising the ambient temperature around the print. This helps prevent the rapid cooling that causes warping and layer separation in materials that shrink as they cool. ABS, ASA, nylon, and polycarbonate all benefit from a warm, draft-free environment. Without an enclosure, these materials are prone to cracking, curling, and poor layer adhesion, especially in cooler rooms or with large prints.

Enclosures also contain fumes and odors. While PLA and PETG are relatively low-odor, ABS and nylon emit strong smells and volatile organic compounds (VOCs). An enclosed printer can be vented outdoors or used with a carbon filter, making it safer and more pleasant to run in a living space. Even for PLA, an enclosure reduces drafts that can cause stringing and inconsistent cooling, though it may require adjusting fan settings to avoid heat creep.

Bambu Lab A1 vs. Enclosed Models

The Bambu Lab A1 is an open-frame, bed-slinger with a 256×256×256 mm build volume. It prints PLA, PETG, and TPU very well out of the box, and its multi-color system (AMS) works seamlessly. However, it lacks a heated chamber and is not designed for high-temperature materials. Bambu Lab’s enclosed models—the P1S and X1C—share the same core technology but add a fully enclosed chassis, a hardened steel nozzle (on the X1C), and the ability to print ABS, ASA, nylon, and carbon-fiber composites. The X1C also has a more advanced lidar sensor for automatic flow calibration.

If you primarily print decorative items, toys, or prototypes in PLA, the A1 is a great value. But if you need functional parts, engineering materials, or want to avoid the hassle of warping, the extra cost of an enclosed printer is often worth it. The price difference between the A1 and the P1S is significant, but the P1S offers a much wider material range and better consistency for advanced users.

Materials: What You Can Print

The biggest practical difference between open and enclosed printers is the range of filaments you can use successfully. Here is a quick breakdown:

• PLA: Prints well on both, but an enclosure can cause heat creep if the chamber gets too hot (above ~50°C). Open printers are often better for PLA.
• PETG: Works on both, but an enclosure helps prevent warping on large parts and improves layer adhesion.
• ABS/ASA: Requires an enclosure to avoid warping and cracking. The bed temperature needs to be high (100-110°C), and the chamber should be warm (40-60°C).
• Nylon (PA): Needs a heated chamber and a dry environment. Nylon absorbs moisture, so a filament dryer is also essential.
• Polycarbonate (PC): Very high bed and chamber temperatures required. Only advanced enclosed printers with all-metal hotends can handle it.
• TPU: Flexible, prints fine on both, but an enclosure helps prevent stringing if the filament is moist.

If you only ever plan to print PLA and PETG, the A1 is sufficient. But the moment you want to print functional parts that need strength, heat resistance, or chemical resistance, you’ll need an enclosed printer.

Costs and Value

Enclosed printers generally cost more than open-frame ones. The Bambu Lab A1 (with AMS) is around $459, while the P1S (with AMS) is around $949, and the X1C (with AMS) is around $1,449. That’s a significant jump. However, the enclosure adds value in several ways:

• Material savings: Fewer failed prints means less wasted filament.
• Time savings: Less time reprinting and troubleshooting.
• Health benefits: Reduced exposure to fumes.
• Resale value: Enclosed printers hold value better due to their wider capabilities.

If you’re a hobbyist who prints occasionally, the A1 is a low-risk entry point. If you’re a professional or a serious enthusiast, the investment in an enclosed printer pays off quickly.

Common Problems with Open Printers

Open-frame printers like the A1 have a few recurring issues that an enclosure solves:

• Warping: Corners of ABS parts lift off the bed as they cool unevenly. An enclosure keeps the whole part at a uniform temperature.
• Layer separation: If the print cools too fast between layers, the layers don’t bond. This is common with nylon and PC.
• Odor and fumes: ABS and nylon smell strong and may release VOCs. Enclosures can be vented or filtered.
• Drafts: Even a small breeze from an open window can cause cracking in ABS. An enclosure eliminates that.
• Inconsistent cooling: For PLA, an enclosure can actually be too warm, causing heat creep and jams. But you can open the door or lid to manage this.

If you already own an A1 and want to print ABS, you might consider buying a cheap enclosure tent (like a Creality tent) or building one from foam board. However, these are less effective than a factory-designed enclosure because they don’t seal perfectly or manage airflow.

How to Choose the Right Enclosed Printer

When shopping for an enclosed 3D printer, consider these factors:

1. Build volume: Do you need to print large parts? Most enclosed printers have a 256×256×256 mm volume, but some go larger.
2. Maximum hotend temperature: For PC and nylon, you need a hotend that can reach 300°C or more. The X1C reaches 300°C, while the P1S reaches 280°C.
3. Heated chamber: Some printers have an active chamber heater (like the X1C’s optional upgrade), but most rely on the bed to heat the chamber passively. For most materials, passive heating is enough.
4. Enclosure quality: Look for a sealed chamber with a door and a top that can be opened for PLA printing. Some enclosures have vents or filters.
5. Multi-color capability: If you want multi-color printing, check if the printer supports an AMS or similar system.
6. Price and brand: Bambu Lab is popular, but other brands like Prusa, Creality, and QIDI offer enclosed models with varying features.

For a beginner who wants to print PLA only, an enclosed printer might be overkill. But for anyone who plans to grow into advanced materials, it’s a future-proof choice.

Safety and Ventilation

Even with an enclosure, you should not assume the air is safe to breathe. ABS and nylon fumes can be irritating, and some VOCs are known carcinogens. If you print these materials, place the printer in a well-ventilated room, or vent the enclosure to the outside. Many enclosures have a port for a 4-inch duct. You can also use a carbon filter or an air purifier with a HEPA filter. Never print in a bedroom or a space without ventilation, especially with children or pets around.

Also, be aware that an enclosed printer can get very hot inside. The electronics and motors are usually designed to handle it, but you should keep the printer away from flammable materials and ensure the enclosure has proper airflow for the electronics. Some printers have a fan that cools the control board, so make sure it’s not blocked.

Frequently Asked Questions

Can I print ABS on the Bambu Lab A1 if I put it in an enclosure tent?

Yes, you can, but it’s not ideal. An enclosure tent helps reduce drafts and retains some heat, but it’s not as airtight or insulated as a factory enclosure. You may still get warping on large ABS parts, and the tent can be a fire hazard if it’s too close to the hotend. For occasional small ABS prints, it might work, but for consistent results, a purpose-built enclosed printer is better.

Is an enclosed printer always better than an open one?

No. For PLA and PETG, an open printer is often better because it provides better cooling and avoids heat creep. An enclosure can cause PLA to soften and jam if the chamber gets too hot. Many enclosed printers allow you to open the door or remove the top to convert to an open configuration.

What is the cheapest enclosed 3D printer worth buying?

Prices change, but as of 2024, the Bambu Lab P1S is one of the best values for an enclosed printer with advanced features. There are cheaper options like the Creality Ender 3 V3 (which has a partial enclosure) or the QIDI X-Plus, but they may have smaller build volumes or less reliable auto-leveling. Always check current reviews.

Do I need a heated chamber for nylon?

Nylon benefits from a heated chamber, but it’s not strictly required if you use a very high bed temperature (100°C+) and print in a warm room. However, for large nylon parts, a heated chamber is strongly recommended to prevent warping and ensure layer adhesion. Some printers like the X1C have an optional chamber heater.

Can I use a resin printer instead?

Resin printers are a different technology. They use liquid resin cured by light, and they are always enclosed for safety. Resin prints have higher detail but are more brittle and require post-processing. If you need functional parts, FDM with an enclosed printer is usually better. If you need high detail for miniatures, resin is the way to go.

Is it worth buying the Bambu Lab X1C over the P1S?

The X1C adds a hardened steel nozzle (for abrasive materials), a lidar for automatic flow calibration, and a higher max hotend temperature (300°C vs 280°C). It also has a more polished user interface. If you plan to print carbon-fiber composites or need the highest precision, the X1C is worth it. Otherwise, the P1S offers most of the same features at a lower price.

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