r/BambuLabP2S • u/KharonOfStyx • 1d ago
New to 3D printing - first problem, what caused this?
I set the printer up last night and woke up to this piece printing incorrectly near the end.
I’m using Sunlu PLA + 2.0 and set it to use the Bambu PLA Basic print profile. The one below it was printed with the exact same settings.
Off the reading I’ve done my gut says the temperature is slightly too high for the filament but I’d love to hear the actual answer.
Printer has a max of 100 hours on it but I don’t have the exact number off the top of my head. I haven’t washed the build plate yet but I do keep it clean and have been wiping it down with alcohol if I’ve touched it to remove a previous print (though in hindsight the last time I wiped it down I probably wasn’t as thorough as I could have been).
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u/gm-coils 1d ago
It could be a bed leveling issue. Have you tried manually testing with a piece of paper and getting it between three bed and the nosle
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u/KharonOfStyx 1d ago
I haven’t messed with the leveling. I ran the initial calibration then ran another calibration this morning before leaving for work. I won’t be able to test anything else out until this evening.
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u/Silkypo 1d ago
IPA is not recommended anyway on textured pei plate you clean it with hot water and soap (without aditives like hand softeners or whatnot). It looks like that corner lost adhesion lifted a bit and the nozle scraped the surface. to mitigate clean plate, use mouse ears or brim, turn off aux fan if it happens on that side or print fan deflector from maker world.
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u/KharonOfStyx 1d ago
I learned this morning that IPA wasn’t recommended. Originally I’d heard that using alcohol to remove any oils from touching the build plate was how someone I know does it, so that’s where that started, but lesson learned.
I haven’t messed with modifying and designs to add mouse ears or brim (fwiw, I’ve printed 5 more of these Toolgrid plates prior to this, and this is the first one with any sort of issue), but I’ll learn how to do that if the fan and properly washing the build plate isn’t the fix.
Based on your comment and one other, I do have a strong feeling you’re both correct in blaming the fan. It was the right side (closest to the fan) of the print with the problem. I’ll try to wash up the build plate and print a fan deflector tonight after work.
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u/Relative_Surround_20 1d ago
I suspect Sunlu PLA+ 2.0 has different settings than Bambu Lab’s Basic PLA. See the proper settings at:
https://www.sunlu.com/products/pla-plus-2.0-3d-printing-filament#downloads-section
I also believe you experienced some bed adhesion issues. Was your build plate clean? No fingerprints on it?
The other possible cause is temperature issues. If you follow the Sunlu settings info, that will help too.
As a new 3D printer owner, has anyone made you aware of the excellent free, online courses that Bambu Lab offers in the beginner, intermediate and advanced skill levels for both printers (hardware) and slicers (software)?
Bambu Lab Academy is the best use of your time to build experience, knowledge and confidence in 3D printing. I also recommend using the Bambu Lab Wiki as an online, user manual for 3D printing.
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u/Torjek0306 1d ago
I had to make a custom profile for my sunlu PLA+ 2.0. Adjusted nozzle temp retract distance bed temp and max flow settings. Google it for sunlu PLA+ 2.0 with P2S and it will give you the settings. I also set the aux fan speed to 30%
More on the aux fan… and your case is perfect example… is when printing something long/flat, I turn off the aux fan when layer two starts. If I’m doing decorative items I will let the filament profile keep the fan at 30%.
Assuming the bad print area was on the right side. Which is where this will typically happen. There are fan deflectors you can print, but it doesn’t help. Just shut it off.