Very effective and lightweight anti-vibration mount for multicopter engines on the arm/rigger.
Needs special rubber grommets and screws which cost about 1$/engine.
The material is 1.5mm plywood (birch, aviation quality) to cut with laser and does the job perfectly. The 181x181mm only available version of plywood at ponoko makes possible cutting 8 sets for an optocopter.
Who buys the plan gets also the CNC file for cutting it from G10 or CF (see picture) per email. (Unfortunately Ponoko does not allow uploading CNC files for 1.5mm drill bit and selecting G10 or CF).
Max engine outer diameter is 32mm, mounting holes are for 16/19/25mm distance