Is this a usual thing?
I clean my plate in-between prints with 99% IPA, I’ve also now cleaned it with dish soap and hot water, which actually has somehow made it worse.
Any tips on how to get adhesion back?
You may find that you’ll get a higher quality answer if you provide details.
I’m not sure what details to include?
It’s an X1C, Smooth PEI plate, I print exlusively PLA at 210/60C.
What else should I include?
Well… for starters…
- Filament used, brand & type
- Plate Temp
- Filament Temp
- Examples pics showing the failure mode
Nobody can read your mind and if you demonstrate a willingness to take the time to document your issue, you’ll find that others are more likely to take the time to assist you. It’s annoying when one has to “yank” details with back and forth posts. Follow the examples set by others here and tell us as much as you know and provide details.
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Fair enough
Esun PLA+
60C
210C
First layer adhesion issues, no pictures to hand, but I do have marks on the plate where an unsuccessful print was ripped off, leaving scarring.
I use Isopropanol 99,9% to Clean and 3DLAC Spray-Glue to maintain Adhesion.
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Yes, works perfectly. 
I find that a light scuff with a green brillo pad will often help to “renew” a textured plate. On flat PEI I will use very fine sandpaper (800ish grit) to scuff the service to rejuvenate it when prints stop sticking and washing doesn’t fix it. I usually wet sand it.
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Soap and water making it somehow worse makes me question water quality. Ever check the ppm of your tap? Just a thought to keep in mind.
The PEI sticker already shows a possible solution, look at the right bottom corner, directly at holes. As I have always used 3D paint and am a strict advocate of it, I have to admit that the Glou Stick can really help with the Bambu stickers greatfull.
But otherwise I have never used any additional chemicals on printing plates, neither on glass nor on others. I just use tap water and wash the plates thoroughly. Then I rub them vigorously and well with a clean towel that has previously been in the tumble dryer. This also makes the surface grease-free.
Have a good evening!
Surely you have this answer on a macro by now? 
Not yet… but I do have the answer to new users asking why they can’t create a topic key mapped 
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Let us assume that you are speaking of the PEI textured plate that comes with the P1, since you didn’t mention it in your post.
Does this problem occur with both sides?
The fact that you’re seeing scaring on the plate, I’ve only seen that with dirty filaments such as Silk which often leaves behind residue. I also saw that when using PETG at very high temps on my PEI plate. However, while it noticeably affected one side, the other side which I tended to use sparingly for only final prints, did not have this affect.
It’s the smooth PEI plate, as I mentioned in title.
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PPM of what? I live in hard water area but my kH, GH & pH aren’t ridiculously high.
I don’t have liquid marble coming out the taps, if that’s what you’re asking?
Try cleaning it with acetone. Make sure it is completely cold, though. And try just a little bit in a corner first, to make sure it doesn’t do any harm, but normally it should be OK.
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Thanks for the advice! I’ve always been told to avoid acetone with PEI, but if it’s either that or get a new plate, I’ll give it a shot first!
I clean PEI with acetone when no other cleaning work, and it usually does the trick. Just avoid acetone on hot PEI, because it may craquelure.
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Exactly the same as what I do. Keeping the plate clean and a very very light spray of the 3DLAC with occasional top ups.
Could always just stick a new cool plate sheet on if yours is really bad / damaged.
I find that my PEI plate loses adhesion after around 5-6 prints as well. I do not clean out scuff the surface though. Rather, I run the flow calibration at the begging beginning of the print. This works for me 100% of the time. You’ll find with any PLA+ brand that the lost adhesion happens a bit more frequently than regular PLA. Sunlu is good and I also like Hatchbox. Haven’t tried Bambu yet, but intend to.
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