40mm diamond core saw for hard ceramic tiles – ultimate precision for wet cutting
Looking for a professional tool that can handle even the toughest ceramic and porcelain tiles? The 40mm Diamond Core Saw for Hard Ceramic and Porcelain Tiles (SKU: G65040) is a premium cutting tool designed for extremely precise, fast and clean wet cutting. Forget about chipped edges and damaged tiles. This diamond drill bit delivers professional results, whether you are an experienced tiler or a do-it-yourself home renovation project.
Thanks to advanced diamond technology and a wet cooling design, this core saw effortlessly penetrates the hardest materials such as porcelain, stoneware, marble and natural stone. Its robust construction ensures a long service life and high wear resistance, meaning the tool will remain sharp even after many uses.
Why choose a 40mm diamond core saw for stoneware and ceramics?
When working with hard materials, it is crucial to use the right tool. Regular drill bits quickly dull or cause the material to crack. Our 40mm diamond core bit is optimized for impact-free wet cutting, which brings a number of advantages:

Extreme precision: The 40 mm diameter is ideal for drilling holes for water pipes, drains or electrical installations.
Long service life: The high-quality 6 mm thick diamond coating provides exceptional resistance to wear and overheating.
Universal use: Suitable for a wide range of hard materials, including stoneware, porcelain, marble, stoneware and hard ceramics.
Easy installation: The standard shank is designed for drills with a chuck, allowing for quick mounting on most standard drilling machines.

Technical specifications and features
This diamond tile drill combines robustness and thoughtful design to achieve the best results with every drilling job:

Drill bit diameter: 40 mm (perfect size for precise holes)
Diamond thickness: 6 mm (ensures long durability and fast penetration)
Operating mode: Impact-free wet drilling (requires water cooling)
Clamping: Shaft adapted for classic drills with chuck
Intended use: Stoneware, ceramics, marble, porcelain and hard gres tiles

Instructions for safe and effective use
To achieve optimal results and maximize the life of your diamond core saw, follow these steps:

Use wet cooling: Always ensure a constant flow of water to the cutting area while drilling. The water cools the diamond coating and removes dust, preventing the drill bit from overheating.
Drill without impact: Be sure to turn off the impact drilling (hammer) function on the drill. Drilling must be done exclusively with rotation.
Start at an angle: Start drilling at a slight angle (approx. 45 degrees) so that the drill bit "grabs" the material, then slowly straighten it to a vertical position.
Adjust the pressure: Let the diamond coating do its work. Too much pressure can damage the drill bit or cause the tile to crack.

See how a hole saw works in practice
To better visualize the ease of use and exceptional efficiency of our diamond drill bits, watch the videos below, which demonstrate the correct drilling techniques in hard ceramics:
Presentation video 1: How to properly start drilling into porcelain tiles:
Watch the drilling video guide
Presentation video 2: The importance of wet cooling in diamond drills:
Watch a video about drill bit cooling
Presentation video 3: Professional tricks for clean cuts without damaging the material:
Watch the video with practical tips
Frequently Asked Questions (FAQ)
1. Can I use this core saw for dry drilling?
No, this model of diamond core saw is strictly intended for wet cutting. The use of water for cooling during work is essential, as it prevents the diamond coating from overheating, ensures a cleaner cut and significantly extends the life of the tool.
2. What drills can I install this bit on?
The drill bit has a standard shank, suitable for all common drills with a chuck (machine drills). Before starting work, make sure that the impact drilling function on the drill is turned off.
3. How to prevent the drill bit from slipping at the beginning of drilling?
Since the drill bit does not have a centering tip, we recommend that you start drilling at an angle of about 45 degrees. Once the drill bit makes a small groove in the tile, slowly align it at an angle of 90 degrees and continue drilling while constantly adding water.


Responsible persons:
GEKO - GEKO SPÓŁKA Z OGRANICZNĄ ODPOWIEDZIALNOŚCIA SPÓŁKA KOMANDYTOWA, ul. Spacerowa 3, 97-500 Kietlin, Poland, (+48) 446824004, geko@geko.pl
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
Before using the 40mm diamond core saw for hard ceramic gres wet cutting, it is important to make sure that the saw is properly installed and attached to the appropriate cutting tool. Before starting to cut, it is recommended to moisten the surface you intend to cut with water to reduce dust and friction and ensure better cutting results. During cutting, check regularly that the cutting surface is sufficiently moistened to ensure the effective operation of the diamond core saw. After cutting, clean and store the saw in a dry place to prevent rust and wear.

Useful tips for work:
• Always wear appropriate protective equipment, including safety glasses and gloves, before cutting to avoid possible injury.
• Use the appropriate cutting tool that is compatible with the 40mm diamond core bit

Warnings:
• Use the crown only with the appropriate tool and in the manner permitted by the manufacturer.
• When drilling wet, prevent water from coming into contact with the electrical parts of the drill, sockets and extension cords.
• Use safety glasses and hearing protection; sharp fragments may be produced when breaking ceramics.
• Before drilling, always check whether there are any electrical wiring, pipes or other installations hidden in the wall or floor.
• Do not touch the crown immediately after use as it may be very hot.
• Do not use a cracked, deformed or severely worn crown.
• Do not exceed the maximum permitted crown speed.
• Do not use impact mode when drilling unless the specific bit is specifically designed for impact drilling.
• Ensure that the workpiece and tool are in a stable position to prevent slipping or sudden jerking.

Same summary

The 40mm diamond core saw for hard ceramic tiles is best suited for users who occasionally or regularly need precise wet cutting of particularly hard ceramic tiles or stoneware materials. With such a product, you can achieve quality cuts that typical universal saws do not allow, especially when more demanding ceramic laying or detailed processing is at the forefront. The tool is ideal for home craftsmen, as well as smaller professional projects where adaptability to hard materials is key, but it is not intended for fast penetration of thicker layers of metal or intensive daily use on a construction site. Due to its focus on ceramics and stoneware, it may be less useful for other materials.

Recommendation source: Enaa guides and team experiences.

User view

Such tools are often used in home renovations of bathrooms, kitchens or when laying floors, where it is important that the edges and openings in ceramics remain clean and precise. Users choose it mainly for those who want to do most of the work themselves, or more experienced craftsmen who need a dedicated tool for stoneware. Typically, satisfaction comes from the combination of precision and reliability in harder materials.

Users say that the Geko brand often offers a wide range of durable tools, making it easier to choose additional accessories to expand your home toolbox.

Why buy at Enaa

At Enaa you will find expertly selected products tailored to the needs of home craftsmen and craftsmen, supported by clear technical data and useful descriptions. Finding a saw suitable for demanding materials is easier, as the tools are classified according to specialization and purpose of use.

Answers to frequently asked questions

Is a hole saw suitable for every type of ceramic and porcelain stoneware?

The saw is designed for hard ceramics and stoneware materials, but for extremely thick or special types of ceramics it is recommended to check the saw's performance according to the thickness and hardness of the tiles.

How do I ensure the longest lifespan of my diamond core saw?

When using it, it is important to follow the recommended speed and use sufficient cooling water to prevent overheating and blade wear.

Is it suitable for beginners or only for experienced users?

A hole saw is suitable for both home craftsmen and more experienced users, as the cutting process is simple when used correctly, but still requires basic caution and familiarity with the tool.

What to do if the saw no longer cuts easily or leaves rough edges?

In such cases, it is best to first check the blade for possible wear or material residue on the teeth and replace or clean the blade if necessary.

Can I use this saw for other materials, such as wood or metal?

This type of hole saw is not intended for cutting wood or metal, as it is optimized for ceramics and stoneware, so it is recommended to use a suitable saw for other materials.

Description updated: April 2026