Max volumetric flowupdates live

21 mm³/s The single value Bambu Studio can’t guess for you

Effective top speed

250mm/s

you asked for 300

target 300 → clamped

Pressure advance K

0.02

starting point — refine on-machine

Flow ratio

0.98

Bambu base (inherited)

Retraction length

0.8mm

Bambu base (inherited)

hotend ceiling 21 mm³/s · Bambu default — KingRoon publishes none ⚠ clamped — capped below your target speed

KingRoon · PLA Plus (PLA+) Tough product page

Nozzle220 °C

Density1.2 g/cm³

Drying55 °C / 8 h

Mfr speed≤300 mm/s

Mfr bed55–65 °C

Rockwell 88; HDT 58.4 °C; tensile X-Y 31.1 ±0.8 MPa; elongation 12.2%; Charpy 5.9 kJ/m²; flexural strength 58.7 MPa; flexural modulus 2442 MPa; annealing to 70 °C heat resistance; Engineering plate NOT recommended (use Cool/HT/Textured PEI); melt index 14 g/10 min

manufacturer source ↗

Is this right for your spool?

Here's how sure we are — and what to watch.

Against Bambu stock

flow 0.98 · ceiling 21 mm³/s

Source

product page · manufacturer ↗

Why these numbers

KingRoon PLA Plus (PLA+) starts from Bambu's PLA Basic reference; KingRoon's published specs are overlaid where available, and everything else stays at Bambu's calibrated default.

Treat these as a starting point — run a flow-test cube and Bambu's Flow Dynamics calibration after import for the last few percent.

Open in the wizard → change printer, nozzle or speed

Download the KingRoon PLA Plus (PLA+) profile

A .zip with the Bambu Studio .json and a Markdown summary of every field.

Then calibrate in the slicer. Run Device → Calibration → Flow Dynamics after import to lock in the K-factor.