This is caled called a trolley pulley
Nora Milling Machine Page 2 More
Setting up Aly's mini Grinder.Pic heavy.
Belt Sander by gtermini -- Homemade belt sander constructed from steel plate, an electric motor, pillow bearings, contact wheels, nuts, and bolts. http://www.homemadetools.net/homemade-belt-sander-33
Knife Grinding Equipment - Ukbladesforum.co.uk
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Router 101: Router basics for absolute, total beginning woodworkers. - YouTube
Horizontal Router Table Plans - Router Tips, Jigs and Fixtures | WoodArchivist.com
homemade metal shaper - Google Search
Bench Vise Plans - Workshop Solutions Projects, Tips and Tricks | WoodArchivist.com