10 Things I Wish I Knew Before Buying a Bambu Lab Printer

Bambu Lab printers are the best consumer 3D printers you can buy right now. I genuinely believe that. I run six of them — an X1 Carbon, an X1E, a P1S, a P2S, and a fleet of A1 Minis churning out parts around the clock. They’ve made me money, saved me time, and fundamentally changed how I think about desktop manufacturing.

But they’re not magic. And the marketing materials, unboxing videos, and Reddit hype don’t tell you everything.

These are the ten things I wish someone had told me before I spent thousands of dollars on Bambu Lab printers. If you’re thinking about buying one — or you just got one and you’re wondering why things aren’t going perfectly — this is for you.

1. The AMS Is Not a Dry Box

This is probably the single biggest misconception in the Bambu Lab community, and it catches almost everyone.

The AMS (Automatic Material System) is a multi-material feeding system. It’s brilliant at what it does — automatic filament switching, color printing, and keeping your spools organized. What it absolutely is not is a filament dryer or a sealed dry storage container.

Yes, there’s a desiccant slot in the AMS. Yes, it’s somewhat enclosed. But “somewhat enclosed” and “sealed dry storage” are very different things. The AMS has gaps for the filament paths, it’s not airtight, and that little desiccant packet gets saturated faster than you think. If you live somewhere with any humidity at all — and if you’re in Florida like me, you definitely do — your filament will absorb moisture while sitting in the AMS.

I learned this the hard way. I loaded four fresh spools of PETG into my AMS and left them for two weeks. By the time I came back to print, every spool was crackling and popping during extrusion. Stringing everywhere. Surface quality looked terrible. The filament had absorbed enough moisture to ruin prints.

What you should actually do: Treat the AMS as a feeding system, not storage. When you’re done printing for the day, either pull hygroscopic filaments (PETG, nylon, TPU, PA) out of the AMS and store them in sealed bags with fresh desiccant, or invest in a real filament dryer. I keep my PLA in the AMS because PLA is pretty forgiving, but anything moisture-sensitive gets sealed storage between sessions.

Some people have modded their AMS with better seals and larger desiccant trays. That helps, but it’s still not a substitute for proper dry storage. If you’re printing engineering materials, budget for a filament dryer from day one. It’s not optional — it’s part of the ecosystem.

2. Textured PEI Plate + PETG = Ripped Build Plate

If there’s one thing that should come with a giant warning sticker on every Bambu Lab printer, it’s this: do not print PETG on the textured PEI plate.

PETG bonds to textured PEI like it’s welded there. I don’t mean “it sticks well.” I mean it bonds at a molecular level and when you try to remove the print, you will rip chunks of the PEI coating off the build plate. I’ve seen it happen. I’ve done it. The plate is ruined.

This isn’t a Bambu Lab-specific issue — it’s a PETG + textured PEI chemistry problem — but Bambu Lab ships the textured PEI plate as the default on most printers, and PETG is the second most popular filament after PLA. A lot of beginners go PLA → PETG as their natural progression, load it up on the same plate they’ve been using, and destroy a $40 build plate on their first PETG print.

What to use instead: For PETG, use the smooth/cool plate (the plain steel one) or the engineering plate. Bambu Lab’s smooth plate works great with PETG — good adhesion while printing, clean release when it cools down. Some people use a thin layer of glue stick on the textured PEI as a release agent, and that does work, but honestly — just switch plates. Bambu Lab made them magnetic-swap for exactly this reason.

Keep the textured PEI plate for PLA, where it gives a beautiful matte texture on the bottom layer. That’s what it’s designed for.

3. Don’t Rush Firmware Updates

Bambu Lab pushes firmware updates regularly, and when you get that notification in Bambu Studio, the instinct is to hit “update” immediately. Fight that instinct.

I’m not saying never update. But I am saying wait a few days and check the community response first. Bambu Lab has a track record of pushing firmware that introduces new bugs while fixing old ones. I’ve personally experienced updates that messed with the AMS feeding reliability, changed slicer behavior, and in one memorable case, caused the printer to crash mid-print consistently on specific models.

The r/BambuLab subreddit and the official forum are your early warning system. When a new firmware drops, give it 48-72 hours. If people are screaming about bricked printers or degraded print quality, you’ll know. If the consensus is “seems fine,” go ahead and update.

The real tip: If your printer is working well and the update doesn’t fix a specific issue you’re having, there’s no shame in skipping it entirely. A working printer with slightly older firmware is better than a malfunctioning printer with the latest version. The only exception is security updates — those you should install.

Also, read the changelog. Actually read it. If the update is “improved AMS feeding reliability” and your AMS feeds perfectly, you’re taking risk for zero reward.

4. Use 99% Isopropyl Alcohol, Not 70%

This sounds like a tiny detail but it makes a real difference. When you’re cleaning your build plate — which you should be doing regularly — use 99% IPA (isopropyl alcohol), not the 70% stuff you have in your medicine cabinet.

The 70% solution is 30% water. That water leaves residue on the build plate as it evaporates, and depending on your local water quality, that residue can include minerals and contaminants that mess with bed adhesion. You’ll get inconsistent first layers, random spots where the filament doesn’t stick, and you’ll blame everything except your cleaning solution.

99% IPA evaporates almost completely clean. Wipe the plate, wait ten seconds, and you have a pristine surface ready for printing. It’s especially important for PLA on textured PEI and for any material on the smooth plate.

You can get 99% IPA at any pharmacy — just make sure you’re looking at the label. It’s usually right next to the 70% on the shelf. Some people use it in a spray bottle for convenience, and that works great. Give the plate a good spray and wipe down with a clean microfiber cloth before every print. Your first layer adhesion will be dramatically more consistent.

One more thing: If you’ve been using 70% and having adhesion issues, do a deep clean first. Wash the plate with warm water and dish soap (Dawn works perfectly), dry it completely, then switch to 99% going forward. The soap cuts through any accumulated residue the 70% solution left behind.

5. The P1S Is Enough Printer for 90% of People

I own an X1 Carbon. It was my first Bambu Lab printer and I love it. But if I’m being honest — brutally honest — the P1S does 90% of what the X1C does at roughly 60% of the price.

The X1C has a few advantages: a hardened steel nozzle for abrasive filaments (carbon fiber, glass fiber), slightly better build quality, a camera with slightly higher resolution, and a fancier display. The P1S is essentially the same CoreXY motion system, the same print speed, the same AMS compatibility, the same enclosed build chamber, and very close print quality.

If you’re printing PLA, PETG, ABS, ASA, and TPU — which is what 90% of people print 90% of the time — the P1S delivers identical results to the X1C. The only time you genuinely need the X1C is if you’re regularly printing abrasive materials that would chew through a brass nozzle, or you want the absolute top-of-the-line and budget isn’t a concern.

My recommendation for most people: Buy the P1S combo (printer + AMS) and spend the money you saved on filament, a dryer, extra build plates, or a second printer. Two P1S machines give you more production capacity than one X1C, and they’ll print the same materials with the same quality. If you later find yourself needing the hardened nozzle, you can actually upgrade the P1S hotend — it’s not locked in.

The P2S is now also an option at an even lower price point, and for PLA/PETG-only users, it’s legitimately compelling. But if you want the enclosed chamber for ABS/ASA, the P1S remains the sweet spot.

6. A Fleet of A1 Minis Beats One Expensive Printer

This is the most counterintuitive thing I’ve learned, and it fundamentally changed how I think about 3D printing as a business tool.

One X1 Carbon costs about $1,200. Three A1 Minis cost about the same. With one X1C, you have one printer that can produce one part at a time. With three A1 Minis, you have three printers producing three parts simultaneously.

For production — whether that’s selling on Etsy, running prototypes for clients, or just wanting to print a lot of stuff — throughput is almost always the bottleneck, not individual print quality. And the A1 Mini’s print quality is excellent. It’s not technically as fast as the X1C’s CoreXY motion, but it’s fast enough that the parallel production advantage overwhelms it.

I run three A1 Minis on automated loops. They print, I pop parts off the flex plate, hit print again. During heavy production weeks, those three little printers out-produce my X1C by a factor of 3-4x despite each one being “less capable” on paper.

The fleet advantages people don’t talk about:

• Redundancy. If one printer goes down for maintenance, you still have two running. If your one expensive printer goes down, you have zero.
• Material diversity. Park a different filament in each printer. One runs PLA, one runs PETG, one runs whatever the current job needs. No filament swaps, no purge blocks.
• Risk distribution. A failed print on a Mini wastes less filament and less time than a failed print on an X1C with its larger build volume.
• Learning curve. Start with one Mini, learn the ecosystem, add more as demand grows. Don’t dump $1,200+ on your first printer when you’re still figuring out if 3D printing is for you.

The only caveat: A1 Minis are bed-slingers (not CoreXY) and they’re not enclosed. So for ABS, ASA, and nylon you’ll need an enclosure mod or a different printer. But for PLA and PETG — which dominate most production work — the Mini fleet strategy is unbeatable.

7. Plan on Replacing the PTFE Tube

Every Bambu Lab printer has a PTFE (Teflon) tube that carries filament from the AMS or spool holder down to the printhead. This tube is a consumable. It wears out. And when it wears out, you get the most maddening, intermittent, hard-to-diagnose failures imaginable.

A worn PTFE tube develops micro-abrasions on the inside. Filament starts catching on these rough spots. The result is intermittent under-extrusion — the kind that happens just often enough to ruin prints but not consistently enough to point you to the cause. You’ll chase nozzle clogs, temperature issues, slicer settings, and retraction values while the real problem is a $3 tube.

Bambu Lab’s PTFE tubes are not terrible quality, but they’re not indestructible either. If you’re printing regularly — especially with abrasive or harder filaments — plan on replacing the tube every 3-6 months, or sooner if you notice feeding issues. The replacement is straightforward, takes about five minutes, and spare tubes are cheap on Amazon or directly from Bambu Lab.

Signs your PTFE tube needs replacement:

• Intermittent clicking from the extruder (it’s struggling to push filament through)
• Random under-extrusion that comes and goes
• Filament has visible scratches or flat spots when you pull it back out
• AMS feeding failures that don’t resolve with the usual troubleshooting

Keep a spare or two on hand. When you’re debugging a mystery extrusion problem and you’ve ruled out the usual suspects, swap the tube before you go deeper. I’ve seen people spend days troubleshooting software settings when the answer was a five-minute hardware swap.

8. Bed Leveling Probably Isn’t Your Problem

Coming from older 3D printers, bed leveling was always the first thing you checked when prints weren’t sticking. Manual tramming with a sheet of paper, endless adjustments, the eternal struggle of getting that first layer just right.

Bambu Lab printers have automatic bed leveling. It works. It works really well, actually. The printer probes the bed before each print (or you can run a full calibration) and compensates for any unevenness in software.

So when your first layer isn’t sticking on a Bambu Lab printer, bed leveling is almost certainly not the problem. I see new users in the forums running bed leveling calibration over and over and getting frustrated because it’s not fixing their adhesion issues. That’s because the issue is something else entirely:

• Dirty build plate. This is the cause like 80% of the time. Clean it with 99% IPA (see tip #4).
• Wrong plate for the material. Textured PEI for PLA, smooth/cool plate for PETG, engineering plate for engineering materials.
• Z-offset needs minor adjustment. This is different from bed leveling. The Z-offset controls how close the nozzle is to the bed on that first layer. A tiny adjustment of ±0.05mm can make or break adhesion. You can adjust this in the slicer or on the printer during the first layer.
• Bed temperature. Different materials need different bed temps. PLA is fine at 55-60°C. PETG wants 70-80°C. ABS/ASA need 90-110°C.
• Filament moisture. Wet filament strings and doesn’t lay down cleanly. See tip #10.

If you find yourself thinking “I need to re-level the bed,” stop. Clean the plate first. Check your Z-offset second. Check everything else third. Re-running auto bed leveling is almost never the fix on a Bambu Lab machine.

9. Filament Drying Matters Way More Than You Think

I touched on this in the AMS section, but it deserves its own spot because it’s genuinely the most underappreciated factor in print quality.

Moisture in filament causes: stringing, surface zits and blobs, poor layer adhesion, reduced part strength, crackling/popping sounds during extrusion, and inconsistent dimensional accuracy. That’s basically every print quality issue rolled into one cause.

And here’s the thing — filament absorbs moisture just sitting in your room. PETG starts degrading noticeably after a few days in humid conditions. Nylon can go bad in hours. Even PLA, which is the most forgiving, will eventually absorb enough moisture to affect print quality if you leave it out for weeks.

When I first started printing, I assumed filament quality was the variable. “This brand strings more than that brand.” Sometimes that’s true. But more often, the difference between a spool that prints beautifully and one that prints terribly is how dry it is, not who manufactured it.

What actually works for filament drying:

• Dedicated filament dryer (best option). Sunlu, eSUN, PrintDry, and others make filament dryers in the $40-60 range. They work. Use them. I run my PETG through a 6-hour drying cycle before printing every single time and my results are night-and-day better than printing with undried spools.
• Food dehydrator (budget option). Works fine if you can fit a spool inside. Same concept — low heat over several hours drives moisture out.
• Oven (risky). You can dry filament in a regular oven at very low temperatures, but most home ovens don’t regulate well enough at the 40-60°C range you need. Go too hot and you’ll fuse the spool into a solid brick. I don’t recommend it.
• Sealed storage with desiccant (prevention). This doesn’t dry wet filament — it keeps dry filament dry. Vacuum bags with desiccant packs, large Ziploc bags, or purpose-built dry boxes. Use after drying to maintain the results.

My workflow: When I get new filament, I dry it before first use (even “sealed” filament isn’t always bone-dry). After printing, I seal it in a bag with desiccant. Before the next session, if it’s been more than a few days, I dry it again. It sounds like a hassle until you compare the print quality of dry vs. damp filament side by side. Then it becomes non-negotiable.

Seriously, if you take one thing away from this entire article, let it be this: buy a filament dryer. It will improve your prints more than any other single upgrade, accessory, or setting change you can make.

10. Speed Profiles Don’t Affect Quality as Much as You’d Expect

This one surprised me, and it might surprise you too.

Bambu Lab printers come with multiple speed profiles in Bambu Studio and OrcaSlicer — typically something like Silent, Normal, Sport, and Ludicrous (the names vary). The assumption most people make is that slower printing means better quality and faster printing means worse quality. Trade speed for surface finish, right?

In practice, on a well-tuned Bambu Lab printer, the quality difference between Normal and Sport mode is… barely visible. Sometimes literally invisible. The input shaper and pressure advance algorithms these printers use are genuinely good at compensating for the higher speeds. You might see very minor differences in corner sharpness or fine detail at the highest speeds, but for functional parts — and even for most decorative parts — the quality holds up remarkably well across speed profiles.

I print almost everything in Sport mode now. The time savings on a multi-hour print are significant (we’re talking 30-40% faster), and the quality difference on 99% of my prints is negligible. I only drop to Normal for things that need absolutely perfect cosmetic surfaces, like display models or parts where a customer will be inspecting the finish closely.

Where speed does matter:

• Overhangs. Aggressive overhangs benefit from slower speeds because the filament has more time to cool and solidify before the next layer lands on it. If you have a part with challenging overhangs, slowing down for those specific features (you can set this in the slicer) is worthwhile.
• Very small features. Tiny details and thin walls print better at moderate speeds because the extruder has more time to place material accurately.
• Flexible filaments (TPU). These need slower speeds regardless. The flexible nature of the filament means it can’t handle the same acceleration forces as rigid materials.
• First layer. Always runs slower anyway, as it should. Good first layer adhesion is more important than speed.

For everything else? Crank it up. Bambu Lab designed these printers to print fast. Let them. Don’t babysit a 6-hour print at Normal speed when Sport mode would give you the same part in 4 hours. Your time is worth something.

Bonus: The Community Is Your Best Resource

One thing I didn’t know before buying into the Bambu Lab ecosystem is how active and helpful the community is. The r/BambuLab subreddit, the official Bambu Lab forum, various Discord servers, and YouTube creators who focus on Bambu Lab content — these are genuinely useful resources when you run into issues.

Before you post “my printer isn’t working, help” — search first. Whatever problem you’re having, someone has had it before and solved it. There’s probably a thread with step-by-step photos. The collective knowledge base is enormous at this point, and it covers edge cases that even Bambu Lab’s official documentation doesn’t address.

The Bottom Line

Bambu Lab printers are excellent machines. They’ve made 3D printing accessible in a way that nothing before them did. But they’re still 3D printers, which means they come with a learning curve, maintenance requirements, and quirks that you’ll only discover through experience.

These ten things would have saved me time, money, and frustration if I’d known them on day one. I hope they do the same for you.

The biggest takeaways: keep your filament dry, clean your build plate with the right stuff, don’t fear the faster speed profiles, and consider whether a fleet of smaller printers might serve you better than one flagship machine. Get those fundamentals right and you’ll spend a lot more time printing and a lot less time troubleshooting.

Happy printing. And if you need specific help with any Bambu Lab model — from the A1 Mini all the way up to the X1E — check out our other guides or drop a comment below. We run these machines daily and we’ve probably solved whatever you’re dealing with.