PLA on Creality K1 Max
youtubeTest on scrap first. Settings are starting points from the linked source. Dry hygroscopic filaments before printing.
Printer
Creality K1 Max
Filament brand
—
Filament type
PLA
Slicer
Creality Print 5.1
Nozzle size
0.4 mm
Retraction
0.7 mm from the retraction tower (printer default 0.6 mm); set it in the filament profile’s setting overrides
Notes
Pushing Plastic retraction calibration in Creality Print 5.1: for direct drive run the Retraction Distance test from 0 to 2 mm in 0.1 mm steps; for Bowden start at 1–2 mm, end at 7–8 mm, step 0.2 mm. The whole test takes about 7 minutes. Dial in temperature, flow, pressure advance and max volumetric first: on the K1 Max that alone removed nearly all stringing from generic PLA before touching retraction.
Source: Pushing Plastic (Bill)