To ensure that your snap rivets are level with the surface of your silverware, it’s best to drill a countersunk hole. For thinner silverware pieces, straight drilled holes are more appropriate. For 6mm crystals, drill a 1/8″ hole, and for 4mm crystals, drill a 7/64″ hole. Use the center drill bit to continue drilling, but be cautious not to make the hole too big with the broadest part of the bit. Test the fit of the snap rivet and continue drilling until it fits snugly against the surface of your silverware piece. Countersunk holes are ideal for heavier silverware pieces. Use a rotary tool’s rubber bullet bit to smooth out any burs. Practice on scrap silverware first, and generously apply lubrication to drill bits for smoother drilling and to prolong their lifespan. The picture below demonstrates the placement of a Crystal snap rivet in a straight-drilled hole, countersunk hole, and chamfered hole. We’ve included helpful tutorials on drilling and setting Crystal snap rivets in silverware.