Leon wrote:
"J. Clarke" wrote in message
...
for Forrest?
They have different blades (hook angles) for different saws. In the
self destruct test I described above, that was to simulate what could
happen on a RAS if the wrong blade was used and it could result in the
blade being pulled into the work more aggressively than the operator
was expecting.
And how does that "injure the tools"?


Try to visualize a blade pulling too aggressively into a board and actually
climbing higher in the cut. I saw it happen a few times with my old RAS
30+ years ago. Typically the motor blade assy. tries to climb up on top of
the board, stalls and becomes lodged in that position. Naturally the arm,
shaft or base gives as the blade climbs up higher in the cut.

I had this happen many times with my old Monkey Wards RAS. I was able
to reduce it with proper tensioning of the motor guides and the straight
arm pull through technique and negative hook blade. My current Searz
RAS with the "control cut" motorized feed cable along with the other
techniques has completely eliminated any climb during a cross cut.

This repeated
action will weaken and eventually damage the saw.

It can sure knock it out of alignment.


This can easily happen with the correct blade, this is the nature of the
beast, but with the wrong blade the situation can be aggravated.