Alfawise U30 Pro Operating Instruction page 37

Nozzle size: 0.4mm.
Retraction Speed: The speed of retraction when printing.
Retraction distance: The length of material retraction, generally select 4.5~8mm.
Initial layer thickness: The first layer thickness of printing. Select default option.
Initial layer line width: 100% will be thicker and denser, Select default option.
Cut off object bottom: The length of cutting off the bottom of model.
Dual extrusion overlap: 0.15mm. Select default option.
Travel speed: The moving speed when nozzle does not extrude filament.
Bottom layer speed: The speed of printing the first layer. Setting a slower speed to make object
better attached to base plate.
Infill speed, Top / bottom speed, Outer shell speed, Inner Shell speed: Select default option.
Minimal layer time: Select default option.
Enable cooling fan: To cool the temperature of nozzle.
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