I hear you, I just wanted to say that after posting this complaint on the forums Bambu got back to me {even though they claimed it was their new year).
They are issuing me a replacement pei plate and nozzle.
I wanted to tell you that my adhesion problems were 100% due to 99.9% IPA!!! Just use warm water and dish soap my friend. I don’t use any alcohol on my board anymore and every single project has stuck firm!
If you use hairspray I recommend taking the board in another room to spray it, it’s portable and you only need to do it every so often 
. I spray mine in the bathroom
Have you ever tried the ABS glue that you make yourself with acetone? I’ve seen some fairly interesting results with that although I’m not sure how clean it makes your prints adhesion layer look.
I never use alcohol on these plates because they say to use warm water and dish soap. I follow the directions because I assume they’re going to work well, avoid damage, and lead to the best longevity. I don’t use hairspray because they tell me not to, for the same reason I don’t use glue. Now that they’re telling me that their instructions are not correct, I don’t know what I’m going to do. Honestly, if I have to use glue, the engineering plate seems like the best option for me as it has never let me down. I just hate using glue and thus I was using the PEI plates because Bambu says glue is not required.
They also say not to use acetone on the plate, which I assume means acetone-based ABS glue would also not be advisable.
I’m glad you got a refund for your plate. I hope they do the same for me.
I would be very careful with “ABS glue” as the acetone will attack the PEI. ABS glue was popular back when printing on glass was the standard.
Do you use hairspray on the engineering plate for ABS?
Even though hairspray is messier, I would probably like it better than that infernal glue stick if it works.
I only print ABS on the high temperature plate that has only been washed with soap and water. Nothing else. Polymaker ABS OEM profile. Same with printer profile. X1CC
I’ve not used ABS (yet). The plate was just the first one handy for the photo shoot.
I put the most faith in glue stick - it always seems to work. It’s hard to get an even coat, but alcohol can help even it out. I’ve also noticed that the colder temperatures (~13 °C) in the shop this winter have made the glue firmer and easier to apply without smearing. I may start keeping a stick in the refrigerator come summer.
Still experimenting with the hair spray. It’s easier and leaves a smoother finish, but small PLA items on the cool plate failed to adhere three times yesterday, while glue stick was perfect on the first try.
Really? They say glue is required on the high temp plate (which confuses me because it’s PEI like the textured plate, albeit a sticker instead of spray-on). I tried ABS once without it (by accident) and the part pulled the sheet right off of the plate. It was a big flat part that took up probably 80% of the sheet at the first layer, so it had a lot of grip. Something that was only tenuously in contact with the plate may have worked…
Yes i understand the recommendations from BL. But I’m not in a hurry to get the print off the build plate. I usually wait a few minutes for it to cool off.
It’s just works for me.
If I have something that is bigger than 50% of the BL build plate, I use my Qidi_X-Max3 becuse it has a heated chamber for extra wide prints. It has its own smooth/texture pei build plate and I use it the same way.
I can second that. ABS on high temp build plate. Works really really well. Big surface parts need to cool down before attempting to remove.
I print overnight and mine was stone cold in the morning when I tried to remove it and the bed came with it. Actual ABS or ASA? Mine literally took the whole bed with it. I wonder why it works for you and not me…
This is what i use.
I print with Bambu ABS and ASA. I find the textured plate self released when it cools. You can hear parts “ticking” as it cools and releases.
For big parts on the high temp plate I find I have to work the flex plate a little more to get big parts to release. Slowly working my way around flexing each side. Sometimes the Bambu scraping blade on this holder works really good to separate a corner to help the part to release while flexing expecially when using a brim.
It sounds like you might of had a defective plate if the full surface peeled up?
Yeah, when the textured plate is new, it releases great. As soon as it starts to cool down, I get the clicking and popping of it releasing, which is awesome. When I print overnight, I go to remove it and it’s literally unattached from the bed. I print like that for 10 or so prints and just one morning, I go to grab it and it’s bonded to the bed. I can pull the part up with some force, but the skirt and the wipes are super hard to remove and I have to chip them away with a plastic scraper. Once it does this, you can start to see the imprint of the part on the bed where it’s clearly removing some of the surface when it comes up.
If I rotate the part so it prints on a different part of the bed, I get easier release again for a while, but the wipes remain stuck to the bed. So, I flip the plate over and I get another ~10 prints before it starts to do the same thing. Are any of you that are printing ABS printing like ten of the same large part in the same exact place on the bed? Either way, bambu says (privately) that this is expected with ABS pulling off the surface and that we should be using glue as a release agent as a result.
As far a the smooth plate goes, I dunno what to say. I printed a few PLA parts on it when I got it, which was fine. Once I had ruined both sides of the textured plate, I started using the smooth plate with glue as they recommend. Once I cleaned the glue for PLA and then forgot i needed it and printed the ABS part without. The part was bonded to the sheet like when the textured print stops working, but this time pulling the part took the sticker-backed sheet off the plate. It came off in chunks, not a total delamination, to be clear.
According to Bambu (privately) this is expected. And I guess if they secretly want you using glue on the textured plate, that makes the two PEI plates consistent in terms of what to expect: which is ABS sticks to them too hard and you need a release agent to avoid damaging the surface.
As of right now, they’re telling me no refund for damaging the plates (technically it’s three since smooth plate needs a new sheet now) while using them exactly as they instructed. I can’t keep going through $40 sheets every 10-20 prints, so I’ll just go back to using the engineering plate with glue.
Have you considered using the 3rd party PEI plates that are now readily available? I’ve found them to not have as “much” adhesion as the Bambu plates which in your application might be just perfect? They are also cheaper than the bambu plates.
Nope, but if you have a link to something I’d give it a shot. Pretty sure I’m not buying any more Bambu PEI plates at this point 
Click the green highlighted text in my above post
Good luck if you used a CC or direct purchase using your debit card linked to your checking account with you bank. Hopefully you used PayPal. If you did then consider this because while PayPal is not particularly preferred by a seller who has a problem, they treated me well when I had this problem with Creality starting on 16 January of this year.
This is all spelled out on their site when you search to file a complaint, but this is a quick reference for you if this happens to fit your concern or for anyone else reading this for that matter. If so, then open a dispute with PayPal. They list this as one of the reasons since it appears to exactly fit your current problem:
PayPal will contact Bambu citing your concern & I think they have 30 days to respond with a solution…or not. If they don’t respond within the required time then PayPal can refund your purchase price back to your buyers account or transfer it back to your bank account or back to the CC you used to buy that’s linked with them.
I had to do this with Creality because they would not respond to me with help when the hot end of my Ender 3 V3 KE broke (key: 2509 Temp Sensor Exception) rendering it in operator only one day after I received it & only got two decent prints during that time. PayPay refunded my money when Creality failed to comply. Who knows how they might apply this with your particular dilemma, but it’s within your right to open a dispute or elevate it to a claim. I hope you can get a resolution…AND SOON!
S/F,
Masterguns
