Bambu Lab A1 vs P1S: Which Beginner Printer to Buy?

For a beginner, the Bambu Lab A1 is the better choice: it is cheaper, quieter, and has a simpler fully automatic setup, while the P1S offers a larger build volume and enclosed chamber for more advanced materials. This guide breaks down the differences to help you decide which one fits your needs and budget.

Background: Bambu Lab’s Place in the 3D Printing Market

Bambu Lab entered the consumer 3D printing market in 2022 and quickly became known for fast, reliable, and user-friendly machines. Their printers use a closed ecosystem: the printer, slicer software (Bambu Studio), and cloud service work together seamlessly. This integration is a double-edged sword—it makes printing nearly foolproof for beginners, but it also means you are somewhat locked into Bambu’s proprietary components and software.

The A1 and P1S are two of their most popular models. The A1 is a bed-slinger (the print bed moves back and forth) with a fully open frame, while the P1S is a CoreXY printer (the print head moves in two axes while the bed moves only up and down) inside an enclosed metal box. Both are excellent machines, but they are designed for slightly different users.

How They Work: Core Differences

The fundamental difference lies in the motion system and enclosure:

• A1: Bed-slinger design. The print bed moves along the Y-axis. This is simpler and cheaper to manufacture, but the moving bed can cause print quality issues at very high speeds and makes the printer take up more desk space. The open frame means you can see the print at all times, but it is also exposed to drafts and temperature changes.
• P1S: CoreXY design. The print head moves in the X and Y directions using belts and pulleys, while the bed only moves up and down. This allows for faster, more precise printing and a more compact footprint. The enclosed chamber maintains a stable temperature, which is crucial for printing materials like ABS and ASA that warp when they cool unevenly.

For a beginner, the A1’s simplicity is a plus. There are fewer moving parts to worry about, and the open frame makes it easier to see what is happening. The P1S is more of a “set it and forget it” machine for those who want to print a wider range of materials.

How to Choose: A1 vs P1S for Beginners

Here is a quick decision guide:

• Choose the A1 if: You are on a budget, you plan to print mostly PLA and PETG, you have a well-ventilated room, and you want a quieter machine. The A1 is also lighter and easier to move.
• Choose the P1S if: You want to print ABS, ASA, or nylon (which require an enclosure), you need a larger build volume (256×256×256 mm vs. 256×256×256 mm—actually the same, but the A1’s bed is 256×256×256 mm too, so the difference is the enclosure), you plan to print with engineering materials, or you want the faster CoreXY motion system.

If you are a true beginner who just wants to print miniatures, toys, or functional parts in PLA, the A1 is more than enough. If you think you might want to explore more advanced materials later, the P1S is a better long-term investment.

Setup Guide: Unboxing and First Print

Both printers come mostly assembled. Here is what to expect:

1. Unbox: Remove the foam and tape. The A1 has a few screws to remove that hold the bed in place; the P1S has a few zip ties on the gantry.
2. Place: Put the printer on a stable, level surface. The A1 needs about 60 cm of clearance on the back and sides for the bed to move. The P1S can go almost anywhere, but you need clearance above for the filament spool.
3. Power and connect: Plug in the power cable and turn it on. Use the touchscreen to connect to your Wi-Fi network. You will need to create a Bambu Lab account and bind the printer to it.
4. Calibrate: The printer will run an automatic calibration routine (vibration compensation, bed leveling, etc.). This takes about 10-15 minutes. Do not interrupt it.
5. Load filament: Insert the filament spool into the holder (the A1 has an external spool holder; the P1S has a sealed compartment inside the enclosure). Push the filament into the extruder until it grabs, then follow the on-screen prompts to load it.
6. Slice and print: Download Bambu Studio, select your printer model, and choose a preset profile (e.g., “0.20 mm Standard”). Send the file to the printer via Wi-Fi or the cloud, and press print.

If your first print fails, check the first layer: the nozzle should be about 0.1 mm above the bed. Use a piece of paper to test the gap if you need to adjust manually, though both printers have automatic bed leveling that usually handles this.

Common Problems and Misconceptions

Misconception: The A1 is not as good because it is a bed-slinger. That is not true. For PLA and PETG, the A1 prints just as well as the P1S. The bed-slinger design only becomes a limitation at very high speeds (above 200 mm/s) or with materials that need a heated chamber.

Problem: Prints lifting off the bed. This is usually a bed adhesion issue. Make sure the build plate is clean (wash with soap and water, not just isopropyl alcohol). Also, check that the bed temperature is correct for your filament (PLA: 60-65°C, PETG: 70-80°C).

Problem: Stringing or oozing. This is common with PETG and TPU. Increase the retraction distance slightly (from 0.8 mm to 1.0 mm) and lower the nozzle temperature by 5°C. Bambu Studio has a built-in calibration tool for this.

Misconception: The P1S is too loud. Actually, the P1S is quieter than the A1 because the enclosure dampens the sound of the stepper motors. The A1’s open frame means you hear everything, though it is still not as loud as older printers.

Costs and Maintenance

The A1 is significantly cheaper (around $400 vs. $700 for the P1S). But consider the total cost of ownership:

• Filament: Both use 1.75 mm filament. PLA is the cheapest (about $20/kg), while ABS and ASA are slightly more expensive. The P1S’s enclosed chamber lets you print these, but the A1 cannot print them well without an enclosure.
• Maintenance: The A1 has a removable flexible build plate that is easier to clean. The P1S has a similar plate, but the enclosure makes it a bit more awkward to access. Both require periodic lubrication of the rods and belts, but the P1S has a self-lubricating system.
• Nozzles: Both use a hardened steel nozzle that lasts longer than brass. Replacement nozzles are about $15-20.
• Power: The P1S uses more power because of the heated chamber, but the difference is small (about 100W vs. 60W average).

For a beginner, the A1’s lower upfront cost is a big advantage. You can buy a lot of filament with the $300 you save.

Safety and Ventilation

Both printers have a heated bed and a hot nozzle that can cause burns. Keep them away from children and pets. The A1’s open frame means you can easily touch the hot nozzle by accident. The P1S’s enclosure is safer in this regard.

Ventilation is crucial. PLA and PETG are relatively low-odor, but they still emit microplastics and volatile organic compounds (VOCs). ABS and ASA emit styrene, which is a suspected carcinogen. The P1S’s enclosure helps contain these fumes, but you still need to ventilate the room. The A1 has no enclosure, so you should only print PLA and PETG in a well-ventilated area.

Both printers have a thermal runaway protection feature that shuts off the heater if the temperature sensor fails. Do not disable this.

Alternatives to Consider

If you are not sure between the A1 and P1S, here are other options:

• Bambu Lab A1 Mini: A smaller version of the A1 (180×180×180 mm build volume) that is even cheaper (around $300). It is great for small prints and beginners, but you cannot print large objects.
• Bambu Lab P1P: The P1S without the enclosure. It is cheaper (around $500) but you lose the ability to print ABS/ASA. Some people buy the P1P and add an enclosure later.
• Creality Ender 3 V3: A budget option (around $200) that is much more hands-on. It requires manual bed leveling and tuning, which can be frustrating for beginners, but it is a great learning tool.

For most beginners, the A1 is the sweet spot: it is affordable, automatic, and produces great prints out of the box.

Frequently Asked Questions

Can the A1 print ABS? Technically yes, but it is not recommended. ABS warps without an enclosed chamber. You might get away with small prints, but large ones will likely lift off the bed. If you want to print ABS, get the P1S.

Do I need to buy a separate enclosure for the A1? Bambu Lab sells an optional enclosure kit for the A1, but it is expensive and not as effective as the P1S’s built-in chamber. If you think you will need an enclosure, buy the P1S instead.

Which printer is quieter? The P1S is quieter because the enclosure muffles the sound. The A1 is not loud, but you can hear the stepper motors and fan. If you plan to print in a shared space, the P1S is better.

Can I use third-party filament? Yes, both printers accept any 1.75 mm filament. You can either use the generic profiles in Bambu Studio or create a custom profile. However, Bambu’s own filament has RFID tags that auto-load the correct settings, which is convenient.

How long does it take to set up? About 20-30 minutes from unboxing to first print, including calibration. The A1 is slightly faster because it has fewer screws to remove.

Is the P1S worth the extra money? If you only print PLA, no. If you want to print ABS, ASA, nylon, or other engineering materials, yes. The enclosure also makes it safer and quieter, which might be worth the premium.

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