Ah okay, now I see it. Neat, and indeed, approximately my body weight. Great that there's already something more developed than that three chip amp oscillator circuit, I'll have to look into that.
And I'm only dipping my toes a bit, I don't have any real background in mechanics, and pretty much none in workshop/tool related stuff. I've only operated a band saw, table saw, jigsaw, etc. a couple of times in my life, and don't own any of those things. Marc, on the other hand, is in it pretty deep.