About this 3D model

ADDED A V2: The v1 is precise, but has very small tollerances and due to some occasional deformation could give some trouble. I added a V2 for better tollerances. Use the V2. the mod consists in 3 pieces for 10mm belt. You may need to adjust the sensitivity of the crash impact with M916 command. The idler needs m5 nut and m5 x 25 bolt