Hours of prints later and I'm baffled

Bambu Lab P Series Troubleshooting
1

Hey everyone,

First time caller, long time lurker, writing here as a last resort before I go full Office Space on my new P1S. I got it 3 weeks ago, and my first 2 prints were fine. Since then, I’ve had about 10 failures and 2 successes (mostly short broad objects). Now I can’t seem to print anything but unadhered spaghetti.

Here’s what I’m working with and what I’ve done to try and fix it:

  • Printer: P1S w/ AMS and PEI bed
  • AMS Humidity: B moving to A
  • Ambient Temp: Currently 65 in the garage, but have tried several prints at 72+
  • Filament: eSun basic PLA
  • Bed temp: Have tried between 55 and 67
  • Nozzle temp: 220
  • Layer and 1st layer height: .2
  • Infill density: 15%, pattern: gyroid
  • Initial layer speed: 20mm/s
  • Initial layer infil 105mm/s
  • Fans: auto 100% max, Aux fan 50%

What I’ve tried

  1. Since about a dozen folks will say it, I’ll start by saying I cleaned my print bed with hot water and Dawn. I cleaned it with a clean brush. I cleaned it with gloves. I’ve washed it so… many… times…
  2. Hair spray
  3. 800 grit sandpaper, then 600 grit, then 600 grit coated with hair spray after. (Washed each time, etc.)
  4. I raised my bed temp: Up to about 67c
  5. I raised the room temp (it’s in my garage), brought it up to about 80.
  6. Changed filament
  7. Dried filament
  8. Printed one of those bed cleaner dealies (I’m desperate).

I know there are things that I can still try, like rafting, glue, and steel wool. Should all this be required with a brand-new printer?

I’m inclined to think it might be a slicer issue. Can anyone look at all this and identify any glaring issues? 3mf file and photographic hall of horror attached.

Thanks in advance for the help!

obj_10_Dry Pod Small.3mf (27.3 KB)

great-spaghetti-v0-b8u4mlvp5qyf1
great-spaghetti-v0-b8u4mlvp5qyf11080×607 67.2 KB

IMG_7623
IMG_76231920×2560 479 KB

IMG_7609
IMG_76091920×2560 327 KB

IMG_7651
IMG_76511920×1440 122 KB

IMG_7657
IMG_76571920×2560 261 KB

2

If it were me, the next thing I’d check is the filament calibration. Flow and PA/K can make a bigger difference than most expect, especially on a printer that’s otherwise behaving normally.

As a separate note, since the printer is in the garage, I’d also make sure the filament is properly dried. PLA absorbs moisture faster in cooler, humid spaces, and even a small amount can cause poor first-layer adhesion.

3

You could try installing the ‘eSUN Filament Printing Parameters for Bambu Lab’ from the esun3d website.
Good luck

4

Do you have other brands of filament you can try?

6

I had been using their parameters from their website, but I’ll give that a shot. Thanks!

I had tried the Bambu filament, as well as Protopasta. Neither worked any better :-(.

7

Hmmm… I don’t have much experience with PA/K settings, but will dig more into it. I appreciate the suggestion!

Regarding humidity, I don’t have a hygrometer, but the AMS is reading A. I assume a hygrometer is the only other way to be more sure?

8

Not even with a hygrometer you are really safe, you need to weight the spools to know for sure :wink: But if it shows A its probably safe.

9

very simple discard your Textured PEI go for a supertack

10

no need to buy the official one though, but need to disable plate detection