Bambu Lab P1S vs P2S: Specs, Differences, and Who Should Upgrade

The Bambu Lab P1S has become one of the best-selling enclosed CoreXY machines, and for plenty of home print shops it serves as a reliable baseline. But what does the newer P2S bring to the table, and is it worth swapping out a proven machine for it? This article compares the two models where it actually matters for day-to-day use: the maximum heated bed temperature, the nozzle and extruder materials, the local screen with onboard storage, the chamber camera, and finally print quality itself. The goal isn’t to hype the new flagship, but to give a sober rundown of the specs and clear advice on who benefits from switching and who can happily stick with the P1S.

What actually changed between the P1S and P2S?

At first glance, these are two very similar printers. Both models share the same enclosed cube-style design, the same CoreXY motion architecture, and the same build volume. So the P2S isn’t a new hardware platform; it’s more of a refined take on a proven concept that raises the ceiling in the spots where the P1S runs into its limits.

The changes come down to a handful of areas. The P2S raises the maximum heated bed temperature, adds hardened wear parts to the print head, offers a more modern local interface with a bigger screen and integrated storage, and improves monitoring through the chamber camera. In other words, it’s a package of upgrades around the same core, not a revolution in how the machine prints.

The manufacturer adds important context here. According to Bambu Lab, the P1S will stay in production and on sale, with no plan to discontinue it any time soon. That changes the whole decision-making logic: this isn’t a choice between an old and a new model where the older option would soon vanish from the market, but two printers available side by side with a different balance of price and features.

The practical impact is significant. If you’re after value for money, you can go with the P1S and put the price difference toward filament, spare nozzles, or ventilation. If you want a stronger set of features straight out of the box, the P2S gives you a better local workflow, more durable parts, and more thermal headroom without needing to buy anything extra.

Is the build volume the same?

Yes, and it’s one of the most important points in this whole comparison. Both machines have an identical 256 x 256 x 256 mm build volume. So if you’re thinking about the P2S for larger models, you’ll be disappointed: the new model doesn’t add a single millimeter in height, width, or depth.

That has a direct consequence for P1S owners. If your main reason for switching is the need to print bigger parts, the P2S doesn’t solve that problem and the upgrade makes no sense. If you’re hitting the limits of the 256 mm cube, you should be looking at machines with a larger format, not at a successor in the same size class.

The shared CoreXY mechanics also mean that the speed profile and the machine’s basic behavior during printing don’t change much either. The differences that make the P2S worth considering lie elsewhere than in dimensions or raw movement speed. That’s exactly why the rest of this comparison focuses on thermals, wear parts, the interface, and monitoring, the things that shape day-to-day ownership.

Bed temperature ceiling and materials

The most tangible technical difference is hidden in the heated bed. The P1S handles a maximum bed temperature of 100 °C, while the P2S pushes the ceiling to 110 °C. Ten degrees might sound like a small thing, but in practice it adds headroom precisely with the materials most sensitive to first-layer adhesion and ambient temperature.

A higher bed temperature helps mainly with ABS and ASA, where better heating of the bottom layers reduces corner warping and lifting off the bed. On large parts made from these materials, which tend to curl, that extra headroom can be the difference between a smooth print and repeated failures. Some engineering plastics that want to be anchored as firmly as possible at the start benefit from the higher ceiling in a similar way.

With everyday materials like PLA or PETG, though, the difference is basically irrelevant, because they don’t need anywhere near those bed temperatures. If you mostly print PLA and PETG, you’ll get little out of the higher ceiling. On the other hand, for a shop focused on technical parts in ABS and ASA, 110 °C is a welcome safety margin the P1S can’t offer.

• P1S: maximum bed temperature 100 °C
• P2S: maximum bed temperature 110 °C
• Benefits mainly ABS, ASA, and more demanding engineering plastics
• With PLA and PETG you won’t notice a difference in practice

Hardened nozzle and extruder: ready for abrasive filaments

The second major difference is in the print head. The P1S uses a stainless steel nozzle and steel extruder gears, whereas the P2S comes with a hardened nozzle and hardened steel extruder gears as standard equipment. The difference is about wear resistance, not print speed or accuracy.

The practical impact shows up with abrasive filaments. Composites reinforced with carbon or glass fibers, along with some filled materials, wear down softer components surprisingly fast. The P1S’s stainless steel nozzle wears out with these materials and eventually needs to be swapped for a hardened version. The P2S is ready for this load right out of the box, which saves the owner both the upgrade and the trouble of dealing with quality that degrades sooner.

For P1S owners, though, this doesn’t mean the machine can’t handle composites at all. A hardened nozzle can be bought and installed in the P1S, so the difference is more about convenience and what’s included in the default package. If you mostly print PLA, PETG, and ABS without fillers, abrasive parts are basically a non-issue, and the P2S’s hardened components stay a mostly theoretical advantage for you.

So the deciding factor is your material mix. A shop that regularly reaches for PETG-CF or similar composites will appreciate the hardened hardware as wear prevention. If you steer clear of abrasives, you won’t pay for durability you won’t use.

Screen, storage, and local workflow

The interface is one of the most noticeable differences between the two machines. The P1S has a small monochrome display with a resolution of 192 x 64 pixels and a 2.7-inch diagonal, and files are loaded onto it via a Micro SD card. It’s functional, but a spartan solution that leans on control through the app and cloud.

The P2S takes local control significantly further. It offers a 5-inch touchscreen with a resolution of 854 x 480 pixels, 8 GB of integrated eMMC storage, and USB drive support. In practice, that means more modern and clearer operation right at the machine and less dependence on removable media, since files can stay in the printer’s internal memory.

For day-to-day use, the difference is most noticeable when you print the same models repeatedly or operate the machine without a computer nearby. The larger touchscreen makes it easier to check a job, pick a file, and make small tweaks, while the P1S’s monochrome display pushes you toward working through the app. But if you run your prints mostly from the slicer and cloud, you’ll save the price difference on the P1S without giving up anything major in your normal workflow.

The P2S’s integrated storage has a handy side benefit too: less fiddling with cards and less risk of leaving your media somewhere else. It’s not a feature that changes print quality, but a convenience that adds up over the long haul.

Camera and print monitoring

Keeping an eye on a running job matters more than it seems with enclosed printers, which often run for long hours unattended. The P1S has a chamber camera with a resolution of 1280 x 720 pixels and a frame rate of around 0.5 frames per second, which is enough for a basic check on print status and for time-lapse videos, but too little for smooth live viewing.

The P2S deploys a more modern monitoring package in this area, aimed at a more usable live feed and clearer remote job monitoring. For an operation where the machine runs long jobs out of sight, better monitoring means spotting a problem faster, such as a part lifting off or a first-layer failure, before a small error turns into a pile of waste.

At the same time, it’s worth keeping expectations grounded. The camera in this class of machine is there for checking in and for time-lapses, not as full-fledged security surveillance. Even the P2S’s better monitoring is still a supplement to sensible practice, meaning printing in a ventilated room and not leaving the machine completely unchecked during especially risky jobs.

Print quality: is there a visible difference between the P1S and P2S?

This is the question that gets a lot of people thinking about switching in the first place, and the answer is surprisingly sober. Practical community comparison tests that put both machines side by side on the same models and the same filament concluded that print quality is essentially the same between the P1S and P2S.

In the reported tests, on common models ranging from a Benchy to functional parts to detailed busts, no meaningful difference in surface quality or accuracy showed up. One interesting detail concerned cooling: the auxiliary fan on the P2S is on the opposite side from the P1S, so transferring the same model without adjusting its orientation initially showed signs of insufficient cooling. After rotating the model, the print came out clean, which points to different component placement rather than a worse result.

Support removal turned out similarly. The difference between the two machines was marginal in testing; supports came off easily on both. So the conclusion is clear: if you expect the P2S to print visibly nicer parts than the P1S, you’ll be disappointed. The differences between the two machines lie in features and operating comfort, not in the quality of the result itself.

That matters for setting realistic expectations. Switching to the P2S doesn’t buy you better prints; it buys more durable parts, a higher temperature ceiling, a more modern interface, and better monitoring. If you’re happy with the quality of your prints from the P1S, you won’t lose any quality with the new model, but you won’t gain any either.

Pros and cons of switching to the P2S

When you line up the differences, a clear picture emerges. The P2S raises the ceiling on thermals, wear parts, and operating comfort, while the P1S remains a lighter, simpler, and cheaper machine with the same printing capability. So the decision doesn’t come down to which machine is better in absolute terms, but to which features you’ll actually use.

• For the P2S: higher bed temperature of 110 °C, meaning more headroom with ABS, ASA, and engineering plastics
• For the P2S: hardened nozzle and hardened extruder from the factory, ready for abrasive composites
• For the P2S: 5-inch touchscreen, 8 GB of integrated storage, and USB support
• For the P2S: more modern monitoring through the chamber camera
• For the P1S: lower price and the option to put the difference toward filament, nozzles, or ventilation
• Against switching: the same 256 x 256 x 256 mm build volume, no increase in part size
• Against switching: print quality is essentially the same between the two machines

Who should upgrade to the P2S, and who should stick with the P1S?

For a new purchase, the P2S makes sense as the default choice anywhere the price difference is reasonable. You get a stronger hardware package, a better local interface, more usable live monitoring, hardened wear parts, and thermal headroom from day one. The P1S, on the other hand, remains the value choice for anyone who’d rather save money and put it toward accessories, spare nozzles, or workspace ventilation.

For P1S owners, the advice is straightforward: don’t upgrade just for size, because the build volume doesn’t change. Switching only makes sense when the newer workflow and the durable default parts solve a specific bottleneck in your operation, such as regularly printing abrasive composites, large ABS parts, or the need for more convenient control at the machine. If you don’t have that bottleneck, you can keep running your P1S with no worries.

The decision boils down to three profiles. A shop focused on technical materials and composites benefits most from the P2S. A user who mostly prints PLA and PETG and runs prints from a computer gets nearly the same result from the P1S for less money. And an owner of a working P1S with no specific problem has no reason to switch.

If you’re not sure which category you fall into, or you’re still choosing your first enclosed machine, it helps to go through the specs side by side and compare them against your own needs. Try the comparison and printer picker below.

Practical notes on running both machines

Regardless of which model you choose, a few common rules apply to both enclosed CoreXY machines. The enclosed chamber helps hold temperature and limit warping with ABS and ASA, but it also traps fumes, so printing technical materials belongs in a ventilated room. The small vent hole on the back of the machine body doesn’t take care of that for you.

Keep your filament dry no matter which model you have. Hygroscopic materials like PETG, composites, and nylon absorb moisture, and wet filament degrades quality regardless of how good the printer is. Drying and storing in airtight containers is equally important for both machines.

With the P1S, expect that moving to abrasive materials means buying a hardened nozzle and keeping wear in mind. On the P2S, that readiness is part of the package, but even hardened parts aren’t immortal; they just last longer. In both cases, it pays to keep a spare nozzle on hand so a swap doesn’t mean downtime in the middle of a project.

The P1S and P2S share the same core, the same 256 mm cube build volume, and essentially identical print quality. The P2S adds a 110 °C bed temperature ceiling instead of 100 °C, a hardened nozzle and extruder from the factory, a 5-inch touchscreen with integrated storage, and better monitoring. For a new purchase, the P2S is a sensible default candidate wherever the price difference is acceptable, while the P1S remains a strong value choice. For P1S owners, switching only pays off when the new features solve a specific bottleneck, not for the sake of size or the expectation of nicer prints.