I think the blackberry vine #bikePolo "mallet"/cutter is a 3D printed head on a 7/8in stick with a slot for a utility knife blade on each side, lump of a knocker on the end, maybe 20-30Β° angle off the stick. Passing at 7mph, you need to be able to cut the green stems growing out and down, some upward, some overhead. None of the garden tools have this offset angle.


