If you do decide to drill, use masking tape, prick punch, small bit, stepped bit in that order.
Quote from: mwmac on August 02, 2015, 07:08:26 AMIf you do decide to drill, use masking tape, prick punch, small bit, stepped bit in that order. This +1 (minus the punch)I don't recommend using a punch on porcelain as it can initiate unwanted cracks on impact.It's better to go straight to a sharp drill bit to create the pilot holes.
Here's the setup my buddy has. Says it works GREAT