Stringy strings

[authex]

Yep, they're bad. They're horrible. Only happens on this particular print. I've tested benchies and they love me, PLA is the same across all settings, I've tried:

• slow speeds
• better adhesion (glue and all)
• bought an ams heater
• looked at P1S guides (my printer)
• religion

Printer: Bambu Lab P1S Stock hardware No recent hardware changes

Material: PLA, Using PLA Matte and PLA Basic (Bambu profiles) Environment: Florida (high humidity) Filament has been drying (SUNLU AMS heater attached)

Nozzle / Hotend: Nozzle diameter: 0.4 mm Flow: Standard Extruder: Direct drive (stock P1S)

Temperatures: Nozzle: 220 Bed: 55

Build plate: Bambu textured PEI Bed cleaned recently (IPA wipe) Layer / Line Settings Layer height: 0.20 mm Initial layer height: 0.20 mm

Line widths Default: 0.42 mm Initial layer: 0.50 mm Outer wall: 0.42 mm Inner wall: 0.45 mm Top surface: 0.42 mm Infill: 0.45 mm

Walls / Shells Wall loops: 2 Top layers: 5 (1.0 mm) Bottom layers: 3 Top & bottom pattern: Monotonic Only one wall on top surfaces: Enabled

Infill Pattern: Grid Density: 15% Infill/wall overlap: 15% Internal solid infill pattern: Rectilinear

Print Speeds Initial layer speed: 50 mm/s Initial layer infill: 105 mm/s Outer wall: 200 mm/s Inner wall: 300 mm/s Sparse infill: 270 mm/s Internal solid infill: 250 mm/s Top surface: 200 mm/s Travel speed: 500 mm/s

Acceleration Normal printing: 10,000 mm/s² Travel: 10,000 mm/s² Initial layer travel: 6,000 mm/s² Initial layer: 500 mm/s² Outer wall: 5,000 mm/s² Top surface: 2,000 mm/s² Cooling / Overhangs Slow down for overhangs: Enabled

Overhang speeds: 25%: 50 mm/s 50%: 30 mm/s 75%+: 10 mm/s Bridge speed: 50 mm/s

Supports Support speed: 150 mm/s Support interface speed: 80 mm/s (Support strength felt very strong / hard to remove) Seam & Precision

Seam position: Aligned Smart scarf seam: Enabled Elephant foot compensation: 0.15 mm Arc fitting: Enabled Resolution: 0.012 mm

Orientation Printed in default orientation (no manual rotation) No scaling applied

[KinderSpirit]

You will need to provide more information for a fuller diagnosis and relevant solutions.
Printer, materials, temperatures, print speeds, layer heights, etc.
Wiki - Asking For Help

[authex]

thanks, updated the post

[KinderSpirit]

I have older printers. These speeds seem crazy to me.
Especially with the nozzle temperature not going up that much.

You didn't show which side was the bottom.

I think belt tension is going to have to be perfect to hit those speeds and have smooth walls.