How to fix a broken infill on a ProtoCentre 999

Open kissliser

click on style

Decrease the infill density to a value of around 20% is normal

Go to the machine main menu.

There you can see the print speed in percentage.

Reduce the print speed in between a value of 50% to 100%.

Open kisslicer

Go to style

change the infill pattern to straight,octagonal, rounded based on the kind of print you are going on with.

In some case , the filament may stick on the nozzle tip and while going for the print, the filament sticked will hit the infill and cause infill to break.

Remove the sticked filament from the nozzle with the help of a needle tip,