Enormous hedge cutter, converted from an WWII AEC Matador.
I'm not sure if this is the exact method I would use for this job, and I'm glad this guy doesn't live within 50 miles of me. Nevertheless, it makes quick work of that hedge.
https://www.youtube.com/watch?v=I3D4FN5cdZk
Previously:
https://www.homemadetools.net/forum/...5899#post82725
https://www.homemadetools.net/forum/...1018#post73587