Rob, take a look here...
http://www.members.shaw.ca/jbarley/powerless_sander.htm
Might be what you are looking for.
"Rob V" wrote in message
news
Hello,
Ive been doing a search on how to make a self powered sander - and saw
several refrences by an AndyC on how he made one - But it really lacked
some
detail.
I was curious if he was out there and could provide some more details.
Thanks
-Rob