First major project I did that used the ShopSmith. I just about gave up ripping anything after the aluminium upper and lower guards kept showering me with sparks no matter how much attention I gave to alignment of the guards and guides.
My grandad had an 1950's version of this machine and my dad had a 1980's Mark V (the one I'm using now) and all I remember is how easy they made everything seem to do on these machines as a kid!
Oh, I did not make those chairs!