How-to Videos DIY: How to build a shade system with Expert Canopy builder Mark Corby. Talk a walk down the Stainless Steel isle with Mark and discover the last place you’ll ever shop for stainless hardware! How To: Polishing Stainless Steel Nuts & Bolts with Mark @ Mark’s Bolts, Nuts and Surplus. This video takes us through the process of properly installing a sleeve anchor into a standard concrete block. Did you catch Mark on the big screen? Here is Mark’s first ever commercial that aired at Harkins movie theatres.