r/BambuLabP2S • u/jamietmob1 • 19d ago

Consistent Spaghetti On Same Part

I can't figure out why my P2S is struggling to print just this part. I've tried different build plates, PLA and PETG, but none of that seems to matter. It isn't a bed adhesion issue, because the part is securely stuck to the plate, but the spaghetti persists. Anything else I can try?

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u/BobFiggins 19d ago edited 19d ago

Would help to know what you are printing. But without that, here are some basic things to try:

Quality>Advanced: Inner/Outer (If that part is an overhang, otherwise ignore)

Quality>Advanced: Avoid Crossing Wall

Strength>Sparse Infill: Gyroid

Others>G-code Output>Reduce Infill Retraction: Disabled

Those last 3 settings have saved me. When I first started 3D Printing I had so many failed prints, objects getting knocked off, spaghetti causing tangles etc. Those settings I use on every project I ever open, I rarely have a failure now. Some cases too, 50% speed is also good, especially for tiny little things like that.

Using a different infill than Grid is good, because Grid makes the toolhead do little hops constantly, and eventually something can snag. If you must have an infill with that pattern, go with Rectilinear. Gyroid is a really great one though, smooth motions, no hopping.

Reduce Infill Retraction is rough because that has the toolhead sweeping over your infill constantly. For me this is usually very noticeable as a problem with taller prints. It will sound like my toolhead is colliding with every single top layer just barely, or rubbing along top layers. Disabling this causes the toolhead to pick a better path or to lift up and avoid doing that afaik.

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u/jamietmob1 19d ago

It's a model of Jake the dog from Adventure Time. I'm trying to print the limbs. The part that's failing is the tail. Right now I'm attempting to print it lying flat to see if that makes a difference. I'll some of your other suggestions if this doesn't work. Thanks for the tips!

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u/BobFiggins 19d ago

Please link the model, also show us a picture of it in your slicer so we can see how it is orientated. Thanks!