This is a robot arm I made, doesnt require supports, I personally used three 180 degrees servos and one 360 degrees servo for the base. Dont use baseV2, i dont think it works very well(it doesnt). I dont really know what type of screws I used for the base but hot glue should be fine. I won't provide code for that, im leaving it to you guys!

DON'T PRINT ROTATORV2, IT HAS SERIOUS DESIGN ISSUES, USE ROTATORV1 INSTEAD!