Pictorial Guide to DIY 2x72 Belt Grinders - CNCCookbookInformation and ideas for DIY 2 x 72 belt grinder / sander making for woodworking, metal, and knife making.need plans for belt grinder,need plans for belt grinder,How To Make A 2 x 72 Belt Grinder - IBUILDIT.CAMaking a homemade 2 x 72 belt grinder. . These parts need a 1″ hole drilled through that lines up, so I've clamped them together to drill both at the same time. The plan was made so . The plans were made with accurate thicknesses for the materials, like 1/2″ (12.7mm) and 3/4″ (19.05mm) for the plywood and MDF.