Maybe there is something I don’t understand. I can’t figure out how setting blade height to barely clear the gullet of the blade above the piece of wood being cut is appropriate.
I can, however, figure out two good reasons not to set the blade anywhere below its maximum height: First, considering that heat dulls the carbide tips and that heats builds up with friction and friction is proportional to the lenght of travel of the teeth in the material being cut, setting your blade low, let’s say with an average angle of fifteen degrees from horizontal with the piece of wood being cut , increases the length that the carbide tips are in contact with the wood to nearly 4 times compared to an average angle of seventy-five degrees! Do the math: cut a piece of one inch thick at an average angle of 75° and the blade travels 1.0353” through the wood. At 15°, that travel becomes 3.8637”. If you want the carbide to cool off, give it air, not wood…
Moreover, the gullet of the blade which carries the hot shavings away will do so for a longer period (ok, it’s about 1 millisecond for a 10” blade, but the principle ramains) thus transfering more heat to the blade, increasing blade wobbling, resulting in increased friction, etc.
Secondly, a low angle of cut, combined with negative hook angles of some blades, results in an attack angle that forces the piece of wood upward, towards you face, where a high angle of cut results in a mostly downward pressure from the cutting tips.
Something I miss?
Care to share on that?
-- Ah! The loving smell of heated Acer Saccharum...