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Instructions on How to Use Diamond Drill Bits – Keeping Cool and On Target

Drilax Diamond Hole Saw Diamond Drill Bit

How to Use Diamond Drill Bits

Keeping Diamond Hole Saws Cool and On Target

How to Use Diamond Hole Saw

How to Use Diamond Drill Bits

In this post, we will try to give you some basic DIY information on how to use diamond drill bits and How to Use Diamond Hole Saws. Generally speaking, diamond drill bits – diamond hole saws are used on brittle materials such as ceramics, porcelain, glass, granite, marble, quartz, tiles, etc. To see our selection of diamond drill bits please visit our store. You can also visit our Amazon Store

What is a diamond drill bit?

We usually start giving instructions and tips about tools before we address a simple question: What is a diamond drill bit? A diamond drill bit is nickel coated metal circular piece (a tube) with a shank for the drill. The rim of the circular tube is coated with artificial diamond abrasive particles. And these diamond abrasive particles do all the work. Although these tools are called drill bits, the main working principle is the grinding action. Diamond abrasive particles adhered to the rim of the diamond hole saw grinds away the material in a circle and a hole is formed by removing a core plug. The first image below shows how the grinding away starts.

What is a diamond drill bit

Removal of a core plug of quartz

 

How long does a diamond drill bit last?

One of the main differences between a regular drill bit and diamond drill bits: you can not sharpen diamond drill bits. Diamond drill bits will last as long as you keep the diamond abrasive particles on the rim of the bit. There are two kinds of diamond drill bits:

1- Electroplated Diamond Drill Bits

These type of diamond drill bits are often considered as light to medium duty tools. The diamond abrasive particles adhere to the rim with a metallic bond. If the tools are overused or abused, the increased temperature will cause the bond to break. The diamond abrasives will be gone and the diamond hole saw rim will have no grinding action left. You can not sharpen or reattach the diamond particles. If the diamond drill bit is used properly, it will last a long time and will serve very well. Please see our posts on how to use diamond drill bits keeping them cool and on target. One of our previous customers posted a comparison of two Drilax diamond drill bits, one of the unused and the other used 4 times.

 

2- Heavy Duty Sintered Diamond Drill Bits

The heavy-duty type diamond drill bits, diamond hole saws have the diamond abrasives embedded in the metal itself. There are no visible diamond particles on the rim. These types of tools will last hundreds of times and they could be used dry. However, we always suggest using water for better performance. In this picture below, you can see one of our heavy-duty diamond hole saw for concrete or masonry drilling.

Concrete Hole Saw

These Drilax Heavy Duty Concrete Hole Saws can be used with regular drills because they have standard 3/8 shanks for standard chucks.

2 inch Diamond Hole Saw for Concrete

In addition to these models, we also have Professional Series Heavy – Duty Diamond Hole Saws for very deep drilling.

Drilax Concrete Diamond Hole saw

Using water for cooling the tool is important. Here are ways to keep the tool to prevent overheating:

Build a Small Water Dam

Plumbers putty is great for building a mini water dam around the hole area.

Water Dam Putty

Positioning the diamond drill bit can be a challenge and it is an important part of how to use diamond drill bits. Here are some of the ways you can start drilling the hole:

Start the Hole At an Angle

Pilots drill bits are not useful when it comes to drilling brittle materials. To drill holes in porcelain or ceramic tile, glass or granite,  start the hole at an angle and slowly work it straight.

Starting Diamond Hole Saw Drilling

Drilling Porcelain Tiles

Here is a close up for “starting the diamond hole saw at an angle”

How to use diamond drill bits

You can go up straight, once you for a C Slot cut in the material:

As an alternative, you can use one of our sets that come with a foam insert guide.

Diamond hole saw set with foam insert guide

You can also use our adjustable guide for positioning the diamond hole saw. You can see our instructions on how to use diamond drill bits with guides here.

Drilax Diamond Hole Saw Guide

Perfect Hole in Tile

This is how you can achieve results with Drilax Diamond Drill Bits.

Drilax Diamond Hole Saw Set Guide

 

 

Tub Drain Project

Using one of the larger Drilax Diamond Holes, this project for tub drain is completed. The small hole is for water pipes.

Tub Drain Hole Tiles

How much are diamond drill bits?

We have a very wide range of sizes, depth of cut, and types of tools. The average price of a diamond drill bit if purchases in a set could be as low as 2 dollars. We also have monster size diamond drill bit holes saws with 6, 7, 7-1/2, 8 inches diameter, their prices can be over 100 dollars.

How to make lamps out of wine bottles?

Please refer to our post about this topic.

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Drilax 5 Pcs Diamond Drill Bit Set 3/4″, 1″, 1 1/4″, 1 3/8″, 1 1/2″ – Wet Cutting Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain, Bottles, Quartz, Lot 5 Diamond Coated Hole Saws- Kitchen, Bathroom, Shower, Faucet

  • Very High Quality Diamond Drilling Tool Set of 5 Different Sizes: 3/4″, 1″, 1-1/4″, 1-3/8″, 1-1/2″
  • Over 80% cost savings compared to big box stores. Use with standard electric or battery drillers.
  • There is no need for a center pilot drill. These tools do not have center pilot drills.
  • Do NOT run dry. These Diamond Coated Tools will work best if you use water to keep the tools cool.
  • Shank sizes vary, maximum shank is 3/8″ – suitable for all common electric drillers.

DX052038

 

Product Description

Electroplated diamond coating will wear off if the tool gets too hot. Never let your drill bit run dry. Here is how you could use water to keep the tool cool:
a- You can build a mini water dam around the hole with plumbers putty.
b- You can choose to spray water on the drill bit.
c- Or you can use running water to cool the drill bit.
EASY TO USE
Center pilot drill bits are for wood, metal, etc.; Here is how you can keep the drill bit on target:
a- You can make your own guide out of plywood – plastic or even a card board. All you need is to keep the drill bit in place until it makes the initial marks.
b- You can start drilling at an angle, with the edge of the drill bit making a C slot and then getting the drill bit up to vertical.
c- You can manually guide the drill bit with wet sponge.

Please use protective gear.

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Drilax Diamond Drill Bit Hole Saw Guide Jig Fixture

 
  • Drilax Diamond Hole Saw Guide 1/8 inch to 3 1/4 inch inches

    $16.99
    Add to cart

Drilax Diamond Drill Bit Hole Saw Guide Jig

Hole Saw Guide Jig Fixture Vacuum Suction Base with Water Coolant Hole for Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain Guides Holes up to 3 1/4 Inches

Quick Tip 1: Using diamond hole saws, it does not matter which way you run your drill. If you are concerned with the nuts unscrewing, we suggest you run drill in reverse (counter-clockwise). This will prevent hole saw guide bearing nuts from unscrewing.

Quick Tip 2: You do not need the guide for the entire duration of the drilling. Once you have made a mark on the material, the hole saw will keep in position.

Quick Tip 3: Do not forget to use water. It is OK to stop drilling for a cleanup and cooling.

SEE REVIEWS ON AMAZON.COM

 

Diamond Hole Saw Guide Jig Fixture

  • Durable Plastic Diamond Hole Saw Guide Jig Fixture with Suction Base – Integrated Water Hole
  • Adjustable Plate to Guide All Sizes of Hole Saws up to 3 1/4″ Drill Diameters – Flip the plate
  • 1 Side of the Plate for Drills up to 3 inches, and Flip the Plate for Larger Sizes up to 3 1/4″
  • Use the Guide to Start the Hole – Remove the Guide for the Remainder of the Hole
  • Secure The Guide with Suction Base – Feed Water through the Integrated Hole

 

Drilax Drill Guide - Large HoleSaws

High-Quality Plastic Diamond Hole Saw Drill Guide with Suction Cup Base

Product Base Dimension: 6″ x 8″

Maximum Hole Saw Dimension: 3 1/4″

Plate Face A: Holes up to 3 inches

Plate Face B: Holes up to 3 1/4 inches

Flip the plate to switch from Side A to Side B

For smaller sizes, you can remove the ball bearings.

Diamond Hole Saw Guide  – Perfect Hole Starter for Ceramic, Glass, Granite, Porcelain or any smooth surface where the suction cup base can hold on to – Including Walls

How to use the hole saw jig:

1. Adjust the sliding plate for the size of the hole saw – drill bit you want to use. One side of the plate is for sizes up to 3 inches and flip the plate for larger sizes up to 3 1/4″

2. Fix the guide using the suction base exactly where you want to drill the hole. Check the drill guide location and slider position before you start drilling. Measure – check twice and drill once.

3. Using water as a coolant, start the hole. You can spray the water or use the integrated hole.

4. Use the guide until the drill bit – hole saw makes an initial mark deep enough to keep the bit in position. You can remove the guide and continue drilling in the same spot.

5. While drilling, keep using water to cool down the diamond drill bit – hole saw. Spray bottles, running water, or a small water pool around the hole can be used to cool the tool.

Drilax Diamond Hole Saw Jig Drill Guide

The suction cup of this hole saw jig is strong enough to hold the guide and the drill bit on the wall – vertical orientation:

Here is a video made by one of our previous customers:

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Ceramic – Porcelain Tile Installation

This is probably one of the most popular use of diamond hole saws.  If you have ever been involved in any kind of bathroom – kitchen renovation, this will sound very familiar.  Regular drill bits do not work on tiles. So, you need diamond coated bits. The smaller sizes such as 1/4″ are used for screw holes. The holes that you use for installing grab bars, towel holders, soap dispensers, etc.  The mid sized hole saws such as 1 3/8″ are used for pipe holes or faucet outlets. 

Without these diamond hole saws, contractors used to break tiles and try to make grooves for pipes and faucets.
You can achieve very handsomely clean holes without the mess and hassle of wasted tiles.

What is the Recommended Drilling Speed?

Please see our post on this topic.

This is an example of a small water pool around the hole. You can use play dough or plumber’s putty  to keep water around the diamond hole saw.

The picture above was posted by one of our customers, and this was his first time ever drilling tiles.


There are also some shower heads that need much larger diamond hole saws.  There is a great 5 star review on Amazon. He purchased this large size 4 1/2″ hole saw for rain shower installation.

Large_Diamond_Hole_Saw_Review_1