Can I use this CNC for Uneven surface carving? Where can I find models for free? How can I design my own model and which software I need? Do you have proper certification for US or EU customer? What kind of power adapter will be shipped ? Does you Software support any language beside English? Can I use “CURA” software for 3D Printing? Do I need to buy any software to run TOYDIY 4in1 3D Printer? Is your Laser safe enough to use at home? Do I need to buy any software to run TOYDIY 4in1 3D Printer?