There are some specialized items needed for this Instructable.The base materials are from Bosch Rexroth. The extruded aluminum base, t-nuts, inside brackets, end caps are all Bosch Rexroth. The extruded member is 45X90 and 14 inches long.
The support blocks are from VXB.COM Part number WH12A
The Skate bearings are form VXB.COM Part Number 608ZZ. Yes I know that these are not taper bearings (ideal choice) but they do work for this application.
The flex motor couplings and rubber spider are from PrincessAuto.com
I used a 12V DC motor from a Black and Decker cordless weed trimmer
I used a variable speed switch from a Milwaukee 18V Li-Ion cordless drillThe rest of the materials are presented as needed in the instructions.