Need help
Prints constantly falling off the print bed and slipping. first layer is printing at 20mm/s and everything else at around 50. im using polylite pla here are my settings:
i am using the textured PEI plate
i am using the textured PEI plate
How are you cleaning your bed?
2 Likes
alcohol and a microfiber towel.
What printer is this?
What color filament? White filament is known to have difficult adhesion somethimes due to certain pigments used.
Try cleaning with mild soap and water. Alcohol does not dissove the grease rather spreads it out. Dry it with microfiber cloth.
Make sure your filament is nice and dry (low moisture content)
Make sure no drafts are around the printer (not close to a cold window for example).
2 Likes
2 Likes
we tried cleaning it with soap it didnt help. maybe its because the printer shakes a fair amuont? could that be the reason possibly?
we are also using the bambu lab p1s bundle with the AMS too.
I had the same issue with my P1S using the smooth plates. Clean them with IPA and then set your initial layer height to 50% of whatever the nozzle diameter is (so for a 0.4mm nozzle set the first layer height to 0.20mm), and in the filament settings under cooling turn the cooling off for the first layer or two. That should help it stick.
If you clean it with soap make sure it is absolutely 100% dry before you start printing again
1 Like
The textured PEI is prone to loosing adhesion when its “valleys” are gradually becoming filled with print residue. That is particularly easy when using IPA. That residue can be a pain to remove as requires multiple cleanings not only with warm water and dishwashing liquid (rather than soap) but a fair amount of muscle grease an a clean dishwashing brush. It may need to be repeated several times, in particular if the residue has been baked in by high plate temps and/or consisting of incompatible polimer residue (e.g. PETG/PLA).
In extreme cases, it may be neccessary to use fine steel wool on the plate to extend its useful lifespan. If all else fails, you’ll probably need to try a new plate.
Regarding your settings, the 65°C for “Other layers” appears rather high. At 20° above the softening temperature, I’d expect some issues with tall prints. Furthermore, you could try increasing the 1st layer nozzle temp by 5-10° C but only on a thoroughly cleaned plate. The 65°C plate temp for the 1st layer already appears to be on the rather high side.
Regarding vibration, I have found the HULA’s to be rather helpful in preventing transmission of vibrations. The printer itself will actually vibrate more, but the internal peak stresses should be reduced. However, with good settings, vibrations should not really be an issue on the P and X series.
The absolute worst way to clean a bed.
Isopropanol/ISO/Alcohol in general is not good at actually cleaning - it simply “spreads” or “thins” the build up materials on the bed. You want to actually be using dish soap without moisturisers in it for the best results.
1 Like
I have read users actually put their plates into the dishwasher with great results.
1 Like
Welcome to the community!
Just remember IPA/ISO doesn’t actually “clean” it simply “pushes the grease” around the plate, making it harder to see - while still being present.
1 Like
Don’t know if it’s the case, but I had a few failures too regarding bed adhesion. I cleaned the bed thoroughly and yet it failed again! I dry my spools and keep them airtight. Then I noticed it only happened with a particular filament. Now I learned that Silk PLA needs a higher temperature (~10C higher) then regular PLA.
Like I said, don’t know if you are using Silk PLA, but just wanted to put it out there in case you do.
1 Like
I read those as well. But there’s at least one of the old guard who had the coating locally rubbed off the plate in the dishwasher.
So it may be a good idea to avoid rubbing between the plate and any other item in or of the diswasher when trying that.
Use something like dawn power wash to clean the bed. The reason for bad first layers are people touching the build plate.
update: using face tissue and IPA to clean it, and i double wipe it. printing using POLYMAKER PLA and bed temp is 55 degrees and its still consistently slipping. anything else i can do?
Having used IPA, you may want to try warm water and dishwashing liquid. You can add a splash of IPA if you want, but without the other two you are just swirling stuff (like facial tissue papers perfume and the oils they are usually diluted in…) around your plate.
1 Like
Isopropyl, ISO, IPA (Any form of alcohol rub) will not clean the bed. It’ll simply thin out whatever grease-like substances you have on the bed and smear it around. You need to actually use a proper degreaser and lint free cloth to remove everything - at a minimum.
Other choice is, take off the plate, go to a sink and wash with dish soap and warm water. Dry using - once again, a lint free cloth and print.
Mixing warm water and isopropyl would make absolutely no difference in this case. Unless we’re talking mixing 70/30 or something - but, that’d be a waste of alcohol. Just warm water & dish soap is more than enough.
1 Like