Links Lumber & Building Supplies Woodwerks Woodcraft Panel Center Lowes Casting & Molding Smooth-On Perma-Flex Mold Company Inc. Art Material & Supplies Blick Plastic American Plastic & Engraving Laird Plastics Metal Columbus Pipe & Equipment Co. Carboard, Packaging, Material Supplies Blue Box Corrugated Specialty Hardware, Fasteners, Materials & Supplies McMaster-Carr Glass Franklin Art Glass Clay Columbus Clay Fabrication Fortin IronWorks IC3D