About this 3D model
This is a holder for the NEO-M8N GPS for the Robbe Arcus II or Hype Relax II glider. I use it with a SP-Racing F3 board for "return to home" and some other flight modes. To mark your cut you can put the holder on the glider upside down and rotated 90 degrees so you can easy draw around. Glue the holder in with some foam glue like "UHU Por".