Q2:Filament Detaching the build plate while printing the first layer

1.The printing speed is too fast while printing the first layer 

A low speed should be set when printing the first layer to ensure enough time for filament to be stuck to the build plate.Normally the first layer speed is set to 50% or lower when slicing.

2.Temperature and Heat dissipation setting issues

Some plastic like ABS has poor performance of shrinkage.Buckling and detachment from the platform may happen due to different shrinkage degree caused by unbalanced local temperature when printing big models. A hotbed is required and should be set to proper temperature(ABS hotbed temp 100-120;PLA hotbed temp 60-70) when printing high-temp filament.Additionally, if your printer has a fan for cooling, it must be shut down when printing the first layer.

3.Build plate surface material

Different build plate surface materials have different adhesion effect.Because of that,it is recommended to use various stickies to improve the stickiness of the build plate, such as glue sticks, glues, dry glues and hairsprays.

4.Other situations

Some smaller models can not be perfectly stuck to the build plate due to their small surface area. To address this issue, the easiest solution is to open “brim” or add “raft” to increase the contact area.