Today’s invention is intended to lessen the effort required when cutting wood with a handsaw.
The side surfaces of the saw blade have slots machined into them so that a uniform, constant flow pattern can be set up in the narrow air passages between sawblade and wood.
This forms a ‘street’ of vortices in the slots which act as air bearings, reducing the drag in both forwards and backwards directions (air having low inertia, a reversal of this flow pattern is not particularly hard to achieve).
