My Jet Contractor's saw does not have a flat on the blade shaft. To hold
the blade while tightening or loosening I have the following shop made
Take a 1 x 4 about 17 inches long. Place two 8 x 1" round head brass
wood screws 3/4 " from one edge of the board, 4 inches from each end,
leaving enough shank exposed to slip into a slot on the blade.
It is used by holding along the blade with the screw in a slot on the
side of blade that would be forced downward by loosening the blade. When
tightening slide the board so that the other screw holds the downward
force on the blade.
Drill a hole in one end to hang it by and Bob's your uncle.
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