http://www.shopsmith.com/ss_forum/
http://www.shopsmith.com/#
Link is to Shop Smith users forum with lots of good members willing to help out.
I bought my Mark V 500 from a guy in Penn Hills, PA. about 3 years ago. It was made in the mid 1980's and not used much. Shop Smith had an infomercial in the 1980's (might be the pioneer of the genre) that demonstrated the machine. They also had traveling salesmen demos at Malls and State Fairs.
They still enjoy factory support and the forum has several members that rebuild and service them, Bill Mayo in Florida has spare parts for older units.
Friend built his house with one in the 1950's. I have used mine to make a cedar glider, 9 ft x 7 ft Jeffersonian bookcase, American Girl Doll furniture, a kick ass fire truck toy box and gunsmithing tasks.
Many SS forum members make "Shorty's" out of MK 5s by cutting the way tubes or remove the top part and mount the power head and tubes to a beam and make a dedicated drill press.
I use my garage as a workshop, so the MK 5 works well for me since it can be moved and stored away, taking up the footprint of 1 or 2 bicycles.
They can do so much and have some unique features/issues that its hard to cover in a few lines.