Hot electric motors, can a fan be incorporated on the shaft to cool the motor additionally.
Most electric motors have them installed?
Is the motor too small for the tasks? It sounds like it.
Travel distance for nut collection.
How far is Apo having to cart the nuts?
Here are a few thought;
- use a heavier mesh for the rock plinth
- Damping and tamping layers of straw may bulge the mesh and cause a break out.
- maybe lighty tamp it with no water.
- I think openings on that wall would be very difficult, maybe consider a strip window post to post.
- Why a polished surface?
- I doubt shellac will stand the environment.
- consider just dropping small diameter bamboo in the mix roughly post to post.
- why 10 feet high, is there much wind in the area?
You can use a clear plastic hose as a water level to sort the levels out.
No string is needed. just purchase the hose and attach a stick at each end to hold the hose while you set things out