When it comes to precision drilling in delicate materials like glass, nothing beats a diamond glass drill bit. These specialized diamond glass drill bits are engineered to handle the challenges of drilling through glass without causing cracks or breaks. In this guide, we’ll explore the best practices for using a diamond drill bit for glass, provide tips on selecting the right bit, and share expert advice to help you achieve perfect results every time.

Diamond Drill Bit for Glass
diamond glass drill bit

1. Understanding diamond glass drill bit

What Makes Diamond Drill Bits Unique?

Diamond drill bits are tipped with small particles of industrial diamond, a material known for its extraordinary hardness and durability. This makes them ideal for cutting through tough, brittle materials like glass. Unlike conventional drill bits, diamond bits grind rather than cut, reducing the risk of shattering the glass.

Types of Diamond Drill Bits

  1. Hole Saws: Ideal for drilling larger holes in glass.
  2. Core Bits: Used for creating clean, precise holes.
  3. Twist Bits: Best for smaller holes and detailed work.
TypeBest UseExample Applications
Hole SawsLarger holesGlass tabletops, mirrors
Core BitsPrecision drillingGlass bottles, decorative pieces
Twist BitsSmall, detailed workJewelry making, intricate designs
Types of Diamond Drill Bits

2. Choosing the Right Diamond Drill Bit for Glass

Selecting the appropriate drill bit for your project is crucial. Here are some factors to consider:

Size and Diameter

Ensure the bit size matches your project needs. For larger holes, use hole saws or core bits, while twist bits are perfect for small, detailed work.

Bit Quality and Grit Size

Higher quality bits with finer grit are recommended for smoother and cleaner cuts in glass.

Shank Type

Consider the compatibility of the drill bit shank with your drill. Most diamond glass drill bit come with round or hex shanks that fit standard drills.

Diamond Drill Bit Specifications for Glass

Specifications of diamond glass drill bit

ModelTotal LengthDrilling DepthOpening DiameterShank DiameterWeight
Φ355 mm3 mm2.7 mm1 g
Φ455 mm4 mm3.3 mm2 g
Φ555 mm5 mm4.5 mm3 g
Φ655 mm6 mm5.3 mm3 g
Φ855 mm33 mm8 mm5.8 mm5 g
Φ1055 mm35 mm10 mm6.2 mm6 g
Φ1255 mm32 mm12 mm6.5 mm8.5 g
Φ1455 mm32 mm14 mm7 mm11.5 g
Φ1655 mm36 mm16 mm7.6 mm14.5 g
Φ1855 mm35 mm18 mm7.5 mm21 g
Φ2055 mm31 mm20 mm8 mm23 g
Φ2255 mm31 mm22 mm8 mm26.5 g
Φ2555 mm31 mm25 mm8 mm35 g
Φ2855 mm31 mm28 mm9.7 mm38 g
Φ3055 mm31 mm30 mm9.7 mm42 g
Φ3255 mm31 mm32 mm9.5 mm49.5 g
Φ3555 mm31 mm35 mm9.6 mm48 g
Φ3855 mm31 mm38 mm9.6 mm70.5 g
Φ4055 mm31 mm40 mm9.6 mm66.5 g
Φ4255 mm31 mm42 mm9.6 mm61.5 g
Φ4555 mm31 mm45 mm9.6 mm70 g
Φ5055 mm31 mm50 mm9.6 mm81.5 g
Φ5555 mm31 mm55 mm9.6 mm84 g
Φ6055 mm31 mm60 mm9.6 mm126 g
Φ6555 mm31 mm65 mm9.6 mm124 g
Φ7055 mm31 mm70 mm9.7 mm109 g
Φ7555 mm31 mm75 mm9.7 mm121 g
Φ8055 mm31 mm80 mm9.7 mm139 g
Φ8555 mm31 mm85 mm9.7 mm141 g
Φ9055 mm31 mm90 mm9.7 mm168 g
Φ9555 mm31 mm95 mm9.7 mm190 g
Φ10055 mm31 mm100 mm9.7 mm209 g
Φ11055 mm31 mm110 mm9.7 mm239 g
Specifications of diamond glass drill bit

This table covers the full range of diamond glass drill bit sizes, including details like total length, drilling depth, opening diameter, shank diameter, and weight.


  • The sizes are denoted with the Greek letter “Φ” followed by the diameter in millimeters.
  • The drilling depth is indicated with a “-” when not specified.
  • Weight is measured in grams (g).

3. How to Use a Diamond Drill Bit on Glass

How to Drill Holes in Glass – Diamond Core Drill Bits

Drilling through glass requires patience and the right technique to avoid damage. Follow these steps for the best results:


  • Mark the Drilling Spot: Use a marker to mark the exact spot where you want to drill.
  • Secure the Glass: Use clamps or a non-slip mat to keep the glass steady.
  • Apply Masking Tape: Place tape over the drilling area to prevent the drill bit from slipping.

Drilling Process

  1. Start at a Low Speed:Tilt the glass drill bit and the glass at 45° to create the positioning crescent groove.
  2. Apply Light Pressure: Gradually increase pressure as the bit penetrates the glass.
  3. Keep the Bit Cool: Use water or a lubricant to cool the bit and prevent overheating.


  • Clean the Hole: Remove any glass dust or debris from the hole.
  • Smooth the Edges: Use fine-grit sandpaper to smooth out rough edges around the hole.

4. Tips and Best Practices

  • Use Proper Lubrication: Always use water or a coolant to keep the bit and glass cool.
  • Avoid High Speeds: High drilling speeds can cause the glass to crack.
  • Take Breaks: If drilling larger holes, take breaks to prevent the bit from overheating.

5. diamond drill bits for drilling glassFrequently Asked Questions

How long do diamond drill bits last?

The lifespan of a diamond drill bit depends on factors such as usage frequency, material hardness, and drilling speed. Typically, they can last through several projects if used and maintained properly.

Can diamond drill bits be used on other materials?

Yes, diamond drill bits are versatile and can be used on other hard materials like ceramic, stone, and tile.

What safety precautions should I take?

Always wear safety glasses and gloves to protect yourself from glass shards and debris.

6. Maintenance and Care

Proper care of your diamond glass drill bit ensures their longevity and effectiveness:

  • Clean After Use: Rinse the bit with water to remove any glass dust.
  • Store Properly: Keep bits in a dry place to prevent rust.
  • Inspect for Wear: Regularly check for signs of wear and replace when necessary.


Using the right diamond drill bit for glass can make your projects smoother and more precise. Whether you’re drilling a hole for a glass art project or preparing a surface for a custom installation, following the guidelines and tips in this article will help you achieve professional results.

For more detailed guides and product reviews on SDS Max Drills, Hammer Drill SDS Max, and Core Bits for SDS Max, visit our tool blog.

Additional Resources:

Related Articles:

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *