Gold-colored barber shear blades are better they come in a higher hardness, due to the titanium oxide (gold coating).
The fan blades are turned by an electrical motor.
If the blades are belt driven, like most are, then it makes no difference what position they are in. The deck is made so the blades do not touch each other.
It's the engine that makes the propeller go fast, not the number of blades.
turbines
The engine, I think
You get the barber shop as soon as Tom Nook's shop makes it's final transformation to Nookington's.
The angle of cut and tight fit of the blades.
dfferent typs and parts
when wind makes a wind tower's blades turn, there is a generator that makes electricity out of it.
Saver Automotive Products, Inc.
Wind moves the blades in the direction that it is blowing.
In my opinion, Dewalt makes the sharpest blade saws.