Hi Matteo,
Thank you for contacting us, we recommend that you can use this type of printing software:OrcaSlicer to print more wonderful models and these are free 3d printing models webiste:thingiverse, makerworld, you can download models to pirnt. if you want to design 3d models, you can design by this blender software.
This is our tech support mailbox: support@geeetech.com.
Have a nice day.