yeah, thats the one.
big wooden mallet that would kill a brontosaurus.
great for martial artists to have around the dojo.
training with a really heavy weapon helps people to learn how to use their bodies to move correctly, instead of using their muscles to force a technique to work.
when the weapon weighs so much that there is only one possible way, the correct way, to use it, then the student learns much faster and is able to "feel" the correct movement with a smaller, lighter weapon and is that much better with it.
i remember being handed a seven foot piece of rebar and being told to use it for spear training.
suddenly, i was able to use my hips and my legs to spin and thrust that spear.
when i moved on to a wooden spear, that sucker was whistling!