When printing, the tool head cannot reach the to the right temperature for a long time, and the printing cannot be started? When the Filament is feeding the nozzle does not emit filament, how to solve the problem when plugging/Jamming? Is the nozzle customized? Where can I buy it? How to adjust z-offset? (suitable for printing when the nozzle is too far away from the printing platform, the model does not stick to the bottom plate; when printing, the nozzle presses the printing base plate and does not emit filament) Can the steps before printing be reduced? The waiting time from file selection to machine printing is too long? In the middle of printing, how to deal with the problem that the model does not stick to the bottom plate and the model warps? How to modify printing parameters (speed and temperature) during printing After printing, the filament cannot be pulled out, how to take out the filament?