From: Chris Zach via Elec-trak <elec-trak cosmos phy tufts edu>
Date: Wed, 6 Jul 2022 11:08:05 -0400
if you put the blades on upside down it should still cut.
I don't remember the construction of a ET blade, but won't this give you
negative lift, i.e., won't it blow the grass toward the ground instead of
sucking it up toward the blade where it can be cut?
Ken