Instant Install 29 – 8-Ounce Epoxy – Granite, Tile, Marble, Quartz, Corian – Permanent Stone Repair – Broken Chips/Cracks – Rebonds/Rebuilds Missing Pieces – Dry in 29 Minutes ... Use a plastic putty knife for large cracks. Try not to overfill the crack. On vertical cracks (e.g., walls), tape down the shaping strip ...