INSPIRATION - MARBLE MACHINE
But, if you're willing to pay, I would say try one of these. http://www.scrollsaw.com/FSMT.htm http://www.scrollsaw.com/FSBMT.htmhttp://www.scrollsaw.com/FSMC.htm I think there be at least one more site out there offering similar, or the same plans, but don't know if there's a price diff ...