Warped bed :( seems like a common QC issue

Bambu Lab X1 Series
354

LOL! Feel your pain, Brother.

I just did a heat/cool cycle - I ran 45 min @ 110°C then cool for 30 mins, repeated 3 times. I did see a difference, but didn’t measure it. I did not remove my tape. Didn’t care for that level of pain. I see you’re the masochist type :grin:

Right after that I ran a set of spools (for respooling), two sides, two sets, in PC and another good sized part in PolyMax, all needed 100-110°C, so it ran many hours at high temp. I saw no change but still need to fine tune just a bit with my tape.

I think the fact that a very large % of my prints are engineering materials that are high temp had already stabilized the warp. So I think you’re probably there.

Glad this helped! Cheers!

355

Bambulab should start selling printer beds on their store so people that don’t qualify for a replacement can just buy one. Better than being stuck with a warped bed forever. Although I’m not buying anything any time soon from the Bambu store. Ordered some filament 3 weeks ago and I still haven’t gotten them. I think the package got lost. I did contact bambulab but I’m not sure if they’ll do anything about it. 150€ down the drain I guess. (EDIT: Well the package finally arrived in Finland after 3.5 weeks, so I guess it wasn’t lost after all. Still over 3 weeks to travel less than 1000km (600ish miles). Not sure if they sent it back and forth to America or something).

Fixing it with tape is not easy… I tried but eh. It’s better than before but nowhere near perfect.

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356

One of the issues with changing the constitution of the bed significantly is that we can’t retune the bed heater. Another pitfall of trying to modify a closed design. Likely not a significant issue in most scenarios, but CNCKitchen did an interesting video about how poor heat-bed tuning can manifest in part surface finish.

https://youtu.be/9JyydfcOcD0

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357

You should just ask support if you can purchase a bed. Why won’t they sell you one? Just ask.

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358

I did ask to purchase a replacement bed, they have not responded in approx 2 weeks to that request.

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360

Don’t worry. I reached out to the guy working on an aluminum prototype and he might be sending it back to me this week. I will send it straight to you. You are my neighbor :slight_smile: I will email you mid-week. Cheers!

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361

I don’t think there would be any point buying one right now, since people have gotten replacements that are more warped than their original print bed. Once they’ve fixed the quality of the beds and can assure they aren’t warped anymore and won’t warp once you heat up the bed a few times then they should start selling them.

362

I received my P1P yesterday and sadly I’m also having the warped bed issue. Significant low spot near the middle of the bed. I’ve opened a support ticket and sent the logs so we’ll see what they say.

I use my printers to make functional parts so this printer is pretty much useless to me in its current state. If I can’t get a reasonably flat bed I’ll have to return it. I bought this because I really don’t feel like building another Voron right now and saw all of the positive reviews for the Bambu printers. It’s a shame because it prints beautifully other than the warped bed.

Let’s not forget that Bambu still advertises “perfect first layers” on their website so I would think that the nozzle almost scraping the bed near edges and line gaps in the center is far from that.

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363

Hi,

I’ve hotfixed my warped heatbed using 3mm glass and magnetic sticker. Now I’m waiting for new bed Bambu Lab promised me to deliver in 4 weeks.

I used small drops of sanitary silicone to fasten the glass to the heatbed, it also works as a support at the places where the heatbed is warped.

Now after tramming the build plate I’m getting perfect prints with all surfaces flat and perpendicular in X/Y/Z. I only need to remember I have to preheat the print plate for some time to let the heat spread in glass.

The only problem I run into was “Homing failed” error after tramming procedure. I figured out that if you follow the tramming procedure precisely step by step, with the glass on top of the bed you get too much stress on pressure sensors causing failed readings. You need to release the tension by a few turns on tension screws.

Happy printing

Dave

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364

Can you share more details on the items you used (and where to find them) so others can replicate your success?

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365

That’s great news, I bet you can’t wait!

That’s a clever way to do it!

367

Sure, it’s not secret. :wink:

I got inspired here by the post of Umuzoo Warped bed :( seems like a common QC issue - #251 by Umuzoo

I got a glass plate cut at the local glass workshop, dimensions 256x256mm, for 2 EUR. I didn’t want to fillet the edges because I could do it at home with Dremel tool, but they usually can fillet the edges of glass if the customer wants it.

I bought a sheet of magnetic sticker 1mm thick. I found it at local store with promotional materials, I’m sure it can be found on the Internet as well, just search for “magnetic self-sticking sheet”. Dimensions of my sheet were 600x400mm, so I got enough material for two applications for 6 EUR.

I simply applied the sticker to the glass and then I used sanitary silicone (clear, transparent, chemically neutral) to fasten the glass on the heatbed. One drop at each of front corners (front = door side), one drop at the center. After few hours, when the silicone cured, it’s dead stable. It sits on the edges of the heatbed, becaus it is warped upwards, and it’s supported in the center, so it doesn’t bend up/down.

Original steel sheet goes to very top of this and is held down by magnetic force of the sheet.

I tried to heat the bed up to 110 degrees for 2 hours, there’s no visible degradation.

I tried to print different materials - PLA, PETG, PA, ASA. It was almost flawless, only with ASA and veeeery long object (200mm long), the forces in ASA were so high that it actually lifted steel sheet from the magnetic bed, but I suspect it would do the same with original bed.

Placing the steel sheet at the assembly is a bit tricky since those aligning brackets are no longer available, they are too low. I’m going to design and print some extensions.

Dave

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368

Any idea when the new flat beds will start shipping to the UK?
Just had onformation that BL will replace mine but no mention of time.

369

Just been quoted approx 4 weeks for a replacement bed.

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370

Is that a new, flat bed, or just a replacement? I was offered a replacement a few weeks ago, but was told they cant ensure it’ll be any more flat, or not bowled, than my current one.

371

Well I was offered a replacement and I replied Yes please send me a replacement that is flat and not warped. I was then told they will send me one in approx 4 weeks.
I also have a GoodPlate on its way from Germany.

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372

Done
https://www.printables.com/model/425663-bambu-lab-build-plate-alignment-brackets-extension

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373

I just received my P1P and I’m sad to say the bed is pretty warped. Multiple spot its at least .625 mm lower than the edges and that was just the first angle I tested 5 minutes ago. I can’t find where I read it, but I feel like this size gap doesn’t qualify me for a replacement which is nuts. I’m not just trying to make fun toys and trinkets, I figured this could be a true maker tool for prototyping and building functional parts, and I feel like a flat bed is the number one necessity as other axis are the only ones that can be worked around by software. I have a 5 year old Ender 3 and the AnkerMake M5 and both have stock beds which are much much flatter. Sadly I didn’t find this thread until my order had shipped. :frowning_face:

374

It will, but new replacement beds won’t be available for a couple more weeks. Bambu Lab was originally shipping out replacement beds to people with less warped beds, but those tended to also be warped (and sometimes much worse). So we’re pretty sure Bambu Lab scrapped all the old ones (as they are now out of stock) and have told several customers that new beds will be shipped to them in a couple weeks (some possibly as early as 2-3 weeks).

As long as you can be a little patient and can shim/tram the bed for now, you’ll get a new one sorted for you.

375

Yeah I was hopeful when I saw they we’re holding back bed replacements for a few weeks, but I feel like I saw someone with a larger gap who was told it was within spec. Hopefully you’re correct though, I’m fine making it work for now as long as they will actually fix the issue. Appreciate the help.

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