Shop floor to Drawing office
The keel at 6mm wide is too narrow…….IMHO
I recco 8mm…………which is the same size as the propshaft recieved
The 1.5mm side cheeks you reccommend, would then be just right
What about deepening the keel to protect the 45mm prop?
It would also be better for the rudder stem
Bob, floggin' away in the workshop