Actually if these were Tea Strainers we'd have probably been in production by now.
In fact this is the third lot of mesh we have tried and works well for up to the faclon engine.

We have a stronger mesh for the eagle and rhino due to the mass airflow these engines draw, and this is the next prototype to be tested.

The final design will have clips to fit to the starter motor "legs", as well as a protective ring around the base to keep the unit from scratching the engine housing..

Rob