By Bibiana Martinez-Ziegler. Make a magnetic "C" Plate for your Cuttlebug. Purchase a ProMag adhesive magnetic sheet, sold at Michael's for $10 -- Use a coupon for a better deal. Cut a piece the size of the C plate; peel off the backing, and stick it directly to the C plate. Sandwich, from the bottom up: A plate, metal adapter, "new" magnetic C plate, die (cutting side up), wax paper, cardstock, B plate.