Drill one side of the door panel vertically to about half position, and then drill the other side of the door panel until it penetrates.
eBay
Diamond Core Bit Drill Bits 20-65mm Hole Saw Cutter for Tile Ceramic Marble Tile. Diamond Drilling Core Bit Hole Saw for Tile Porcelain Marble 25-65mm Hole Cutter. 1pc 6-152mm Diamond Drilling Core Drill Bits Hole Saw Cutter for Tile Ceramic.
eBay
TechDiamondTools, Diamond drill bits, Drilling tools,tech diamond tools, drill bits, cutting tools, creating holes, wet drilling,diamond core bit, fast penetration, drilling in hard abrasive non-ferrousmaterials, maximum drilling speed, diamond coated tools, excellentperformance, superior design, best performance in every drilling application, developedfor intensive professional use, maximum cutting speed, wear resistance in heavydrilling.
eBay
eBay
eBay
High carbon steel body with heat-treated teeth. Ideal for installing downlights, for plumbing work, and fitting kitchens and bathrooms, the set is made from high carbon steel and includes 8 x holesaws: 19, 25, 29, 32, 38, 44, 51 and 64mm, 2 x arbors and 1 x 2.5mm hex key.
eBay
Scope of use: for all tiles, vitrified bricks, marble, granite, microcrystalline stone, ordinary glass, ceramics, quartz stone, etc. Material: Brazed diamond.
eBay
Description:* This glass hole saw needs to be used at a low speed, about 800-1000RPM.* Please start your hole diagonally, make a round trace and then hold drill straight.* In order to prolong the life of this glass hole saw, please work with coolant when processing.* Wide used for drilling glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, granite, light stone and fiberglass. .
eBay