When drilling, lightly lean against the marble at an oblique angle. The smaller the force, the less slippery it is, and a crescent-shaped positioning groove is created. When drilling, you need to add water to cool the drill bit.
eBay
M14 Diamond Chamfer Router Bits Dia 38mm Milling Tile Cutter Marble Concrete Hole Saw Masonry Drilling Crowns Construction Tools
Aliexpress UK
Extensive Variety: Includes 57 HSS titanium twist drill bits, 30 HSS black oxide twist drill bits, 17 wood drill bits, 21 masonry drill bits, and 66 screwdriver bits. Includes: HSS, Titanium, and Screwdriver Bits.
eBay
1pc M14 Diamond Chamfer Bits Dia 35-50mm Milling Marble Concrete Tile Hole Saw Masonry Drilling Crowns Construction Job Tools
Aliexpress UK
Diamond Has the Characteristics of High Hardness and Wear-resistant, Which Makes the Carving Tools Horn Head in the Face of High Hardness Carving Materials, Such As Jadeite, Agate, Jade, Etc., but Also Can Maintain Good Cutting Performance, Not Easy to Wear and Tear, so As to Prolong the Service Life of the Tool.
eBay
DEWALT Magnetic Impact Driver Bit Set PH2 Pivoting Bits Holder Extend 1/4" 6.35mm Hex Shank Electric Drill Accessories
Aliexpress UK
Material: M42. 10mm shank, 15 – 300mm dia. Our hole saws have superior performance and higher cutting strength than other hole saw in market. Widely used in all kinds of table drills, drilling machines, Cordless Drill.
eBay
15-100mm Carbide Tipped Forstner Bit Set Boring Hole Saw Cutter Woodworking Drill Bits Set for Wood Plastic Plywood Tools
Aliexpress UK
Shank Type: SDS Plus or SDS Max. -Length: 110mm, 150mm, 200mm, 350mm. -Suitable for drilling concrete, blockwork, natural stone, solid or perforated bricks, hollow blocks etc.
eBay
1pc Dry Diamond Drilling Core Bits Ceramic Tile Hole Saw Cutter Granite Marble Drill Bits with M14 Thread Opener
Aliexpress UK
Multi purpose and versatile TCT routing tool. For use with mains operated power drills with a 13mm (1/2") capacity chuck only. Ideal for removal of old and soft mortar between brick courses prior to repointing.
eBay
EZARC 5PCS Countersink Drill Bit Set for Metal, 1/4 Inch Hex Shank Countersunk Bits 82 Degree 5 Flute, 1/4” 3/8” 1/2” 5/8” 3/4”
Aliexpress UK
Complete 246pc Drill Bit Set. Why Choose Our 246pc Drill Bit Set?. Forget about the hassle of searching for individual bits or compromising on quality with lesser sets. Our 246pc Drill Bit Set provides you with everything you need to tackle any drilling task confidently.
eBay
EZARC 5-Pieces Countersink Drill Bits for Metal, Countersunk Bit Set 82 Degree 5 Flute, 1/4” 3/8” 1/2” 5/8” 3/4”
Aliexpress UK
246pc HSS Titanium Twist Drill Bit Set. This 246pc HSS Titanium Twist Drill Bit Set includes everything you need for any drilling task, neatly organized in a durable storage case, complete with a 2- for your peace of mind.
eBay
5 Pcs Countersink Drill Bit Set 1/4" Hex Shank M35 Cobalt 82° 5 Flute Countersunk Bit Set 1/4” 3/8” 1/2” 5/8 3/4”For Wood Metal
Aliexpress UK