P2S 0.2 Nozzle, prints/supports flying loose mid-print

I’m having a lot of trouble not failing my prints.

Bambulab P2S, 0.2 stainless steel nozzle, Textured PEI plate, Bambulab Basic PLA (jadewhite)

So mainly, my supports keep falling over or get blown away and my prints fail mid-print.

I’ve recalibrated a few times, washed my plate for adhesion problems,

I’ve did some troubleshooting online but the same thing just keeps happening.

*other prints with more surface adhesion do work better, the less surface/more supports the more fail chance :confused:

For such delicate prints, I would strongly recommend switching to a smooth plate, as it has significantly better adhesion. The textured plate is more jack-of-all-trades and not really ideal for this purpose.


What infill do you use? I hope it’s not rectilinear, because the paths cross each other, and that always results in little bumps against the object. Unfortunately, I can’t really tell from the photos, but it looks like a crossing pattern - not good.


Perhaps you should reconsider your approach. You might want to consider whether tree support is the right choice. An alternative would be to turn the object through 90° so that it is lying on its back, and then use normal support, provided that the back of the object is not particularly important.


In general, it can be said that 0.2 nozzles - including miniatures and decorative figures - place high demands on the printer. This must be viewed as part of an overall concept: from the print plate, to the print settings, to the orientation.


A 0.2 nozzle almost always requires a smooth plate. Not across the board, but often in the context of such miniatures.

As I said, here’s what you can do right away: Use infill that doesn’t cross nor collide with the object, and, if necessary, reorient the object and try using normal supports.


Otherwise, you can also upload the 3MF file to the forum or post the link if you got it from MakerWorld.

I’ve tried diffirent infills such as gyroid or kubic, same outcome :smiley:

  • Gyroid is good; it doesn’t cross.
  • Cubic is bad, crossing, and pushes the object around when printing at such high levels of detail.
  • Honeycomb is also a good alternative that doesn’t cross; it also has the advantage that the printer doesn’t wobble as much.

Personally, I usually go with Gyroid because you can’t go wrong with it.

By the way, here’s something else that helps - I completely forgot to mention it - if you increase the initial layer of the support. But that only helps if the first layer of the support doesn’t hold. It doesn’t help if the support breaks off or the nozzle hits it with full force.

However, it’s actually always a good idea to do this with such delicate objects / supports.

OK I will try adjusting the supports a little more.

I also ordered the smooth cooling plate to see if that gives better adhesion, will update on the progress

I was wasting filament left and right till I figured out how to use Brim in my P2S. Now I set the Brim to bottom, 10mm, as a rule unless the object is pretty darn flat.

I rather waste material on a nice sturdy Brim, than have my prints break free nearly done.

Retro Sharky is saying the same thing, I just found Brims in mine (under Others) and I almost always adjust it.) Works for me. Before that, it was Sooo frustrating for things to fail!

Why Brims? The name beats me. Brim of a cowboy hat? This hobby has some weird terminology.

3D Brims - Search

I’m trying to print the same model again with adjusted settings, but now its failing in one of the support trees…

And i see how its getting knocked over, cuz the nozzle bumps into extrusion errors…

The extrusion totally failed in one of the supports resulting in bumping with the nozzle and failing my prints, any ideas to solve the extrusion problem?

Please upload the 3mf file to the forum so we can take a look at the settings. At this point, it’s unclear whether this is an extrusion problem.


To get back to that: Did you run both tests using exactly this spool of filament and your 0.2 nozzle?

I will run those again tomorrow.. and will upload the file, but this happens on other prints aswell, mainly when i have a lot of supports and few surface area.

The chamber (closed) is 38*C could it be heatcreep?

It’s this file from makerworld; https://makerworld.com/nl/models/1693578-lizard-meme?from=search#profileId-1795447 and i attached my sliced version of it

lizardmememf.gcode.3mf (6,6 MB)

The following problem was found: For some reason, your support structure is incorrect. It not only goes to the fingers as it should, but also goes all around them and into thin air.

Same thing with the tail - it prints the support completely into the air: That’s bound to fail; no wonder the print failed. Do you see that big gap?

The solution to the problem will be in a second post; it’ll take a little while…

So when I open the linked model from MakerWorld - it doesn’t generate any faulty support:

Now the big question is, what did you do differently?


Okay, you’ve somehow tweaked every single parameter there could possibly be on your model. How did you come up with the idea of adjusting every single parameter?


Honestly: It’s impossible to figure out - You have to tackle it this way: There’s only one solution: reset the profile.


Now let’s go over the key points:

  • Simply adjusting the initial layer height doesn’t make any sense.
  • Used as a Wall Generator classic - I don’t think the designer intended Arachne Mode, nor do I think it’s necessary; it just creates new problems in this case
  • Ironing won’t do you any good on an object like this - there are hardly any flat surfaces. What matters most for you is the layer height.
  • Then there are so many other settings you’ve adjusted under advanced settings - I can’t even list them all.
  • So you really did adjust every single speed parameter… without me being able to make any sense of it.
  • Support - every parameter has been changed, too, for no apparent reason.

In a nutshell: You just clicked on every parameter and changed it.


The only thing you actually need to change is: After you’ve reset the profile

  • I would recommend wall thickness of three
  • Infill gyroid, if it’s not already specified.
  • Seam position: back - if desired
  • support initlal layer expansion: ~10mm

That’s it - no other wall generator, no brim, no speed adjustments, no ironing, no advanced settings. Keep it simple - all your settings were the problem.

  • If you really want to improve the quality even further, you can select adaptive layer height - but only at top of the head of this lizard. I would, though, at least try one without it first.

Ok thanks for checking all of that tho :rofl:

I will try to print it tomorrow with the settings reset again and only adjust what you suggested!

Before i try to reprint the model i’m going to run these calibrations first

That is some great and in-depth troubleshooting, RetroSharky.

I am in awe. Respects!

So to get back to you,

I reset all the parameters back to normal, did run a new flow dynamics calibration and adjusted the settings to the best results.

I also bought another build plate (Biqu Glacier)

I first had to do some prints which required no supports and those turned out fine, as usual…

I ran another print today with supports again (auto tree) and my print failed again, not on the print itself but my supports breaking halfway (not from the plate) just snap in the middle resulting in spaghetti failure.

I’m pretty convinced it’s not an adhesion problem, it seems like i generate faulty supports.

I will try the print again tomorrow but instead of auto tree supports i’m going to try the classic supports and see if that makes a diffirence

inspect your support structures after you slice, and send us some screenshots. Having tree supports fail like that seems extremely unusual, considering that they are basically just hollow tubes.

Also, yes, keeping your chamber closed and allowing it to reach 38C while printing PLA could definitely be causing some issues with heat creep. Even on my P1S, for example, I have to leave the door open when printing larger PLA prints, or quality definitely starts to degrade towards the top.

A photo would be pretty helpful right now…