In our test it did Diamond core bit set from Fairmo an very good Leave an impression. Drilling holes succeeds with the four Diamond drill bits with diameters between 25 mm and 68 mm using an angle grinder very well. Also can be used with the also included finger grinder Mill out individual shapes. Through the supplied Adapter the tools can also be used in a cordless screwdriver. However, this requires a little more skill than with an angle grinder.
Benefits
✅ precise drilling
✅ Clean edges
✅ Individual shapes with the finger grinder
✅ Suitable for angle grinders with M14 thread
✅ Adapter for cordless screwdrivers
Disadvantages
❌ Use in the cordless screwdriver requires skill
❌ no phone number given
The test
General Information
We got the article in the practical test examined and tested in detail. Below we go into more detail about the features and impressions. The product, from the packaging to the materials and quality to the range of functions and handling our test procedure subjected.
To give you a quick overview, we work with a points system. The maximum possible number of points per area is 100 points. The final overall grade is calculated from the average of all tested characteristics, taking into account the respective weightings. For a detailed insight into our comprehensive Evaluation process, which forms the basis of all our product reviews, please click here.
The first impression
The packaging and markings
ℹ️ Here we take a closer look at the packaging. Sustainability is becoming an increasingly important factor. In addition, of course, adequate protection of the product must also be ensured.
| Criterion | Remark | Points scored* |
|---|---|---|
| product protection | Cardboard is stable, product adequately protected | 100 points |
| sustainability packaging | Apart from the foam board, unnecessary packaging waste was avoided | 90 points |
| packaging convenience | Can also be opened easily without tools | 100 points |
| Total | 97 points |
*The maximum number of points is 100 points
The Diamond core bit set from Fairmo came in a near perfect fit Shipping box at. Inside the box was the diamond core bit set in its product packaging. Due to the right size of the shipping carton, the product packaging could only slide around a few centimeters. The diamond tile drill set and the associated product packaging were undamaged and in perfect condition.
The Product packaging is printed in dark green with orange accents and looks good with the product. Since it was not glued, it can be easily opened without tools.
The product packaging contains the suitcase with the tools. At the top of the box is a thin sheet of foam. This could have been dispensed with for reasons of sustainability. Through the two carton and the case are the tools during transport outstanding geschützt.
After unpacking
The package contents and instructions
ℹ️ The first impression after unpacking sticks in most people's minds. Are the package contents complete and does the manufacturer make it as easy as possible for me to use the product directly?
| Criterion | Remark | Points scored* |
|---|---|---|
| Package Contents & Scope | Extensive set of four diamond drill bits, a finger grinder, an adapter and a case | 100 points |
| Instructions | Written in German and understandable on the product packaging | 100 points |
| Contact information | On the case and product packaging, unfortunately without a telephone number | 90 points |
| Total | 97 points |
*The maximum number of points is 100 points
The Set consists of a total of seven parts: Four Diamond drill bits with the diameters 25 mm, 35 mm, 50 mm and 68 mm, one Adapter for cordless screwdrivers, one end mill and the suitcase. The set thus offers a comprehensive selection of tools for processing tiles and granite slabs.
The Instructions located on the back of the Product packaging. Here you will find a user manual with tips and warnings. The instructions for use are written completely in German and use pictures to visualize the tips. This means that the product is also suitable for handyman usable who have not previously worked with such a drill.
The Contact information can also be found on the product packaging. They are located on the bottom and include company name, address and an email address. Unfortunately, a telephone number is not given. The warnings and contact information are also printed on the back of the case.
First time in hand
Product processing and appearance
ℹ️ Before we start the practical test, we take a close look at the product processing. How high-quality are the materials used? Are the haptics & optics satisfactory?
| Criterion | Remark | Points scored* |
|---|---|---|
| Visual Appearance | All tools completely and evenly painted in green, the adapter is black | 100 points |
| application | All parts are well made | 100 points |
| stability | The tools are made of solid metal with high wall thicknesses | 100 points |
| sustainability of the product | Very stable tools promise high durability, unnecessary plastic shell in the case | 90 points |
| suitcase | Convenient for storage and transport, but the cut-outs for removing the tools are too small | 90 points |
| Total | 96 points |
*The maximum number of points is 100 points
The suitcase consists of two plastic halves, which can be quickly closed with a clamping mechanism. It has a practical carrying handle on the top. The bottom half is with black Foam material filled, which contains precisely fitting recesses for all other parts of the set. The Recesses are very tightly dimensioned, which means that the tools hold firmly in them despite their relatively high weight. The two large drills protrude from the foam and are easy to remove. The other, smaller tools and the adapter are completely sunk into the recesses. Therefore, there is a small bulge in the recess here to put your finger in. Unfortunately the recess zu kleinto grab the stuck tools with your finger. With a little effort in the fingers, the tools can still be released. In the upper half there is an additional transparent one plastic shell to protect the tools against falling out. However, since these are firmly anchored in the foam, this would not have been necessary.
The Diamond drill bits themselves are made of solid metal and accordingly very stable. The bottom is the same for all four sizes flange with M14 internal thread. The flange has two to loosen tools that are firmly screwed in from the angle grinder or adapter flat sides, which can be applied with pliers. The actual one is located above the flange drill bit. This is hollow on the inside, has two openings for discharging drilling material and a very rough, sparkling silver one diamond tip. All drills are 60 mm high. The actual drill bit accounts for 40 mm of this. The diamond tip extends over 10 mm.
Also the finger grinder has one flange with M14 internal thread and flattened sides. Compared to the drills, however, this one is thinner. The working page In contrast to the drills, it is not hollow and is completely covered with the rough diamond coating. The total height of the finger grinder is 65 mm, the working area extends over 40 mm and has a diameter of 20 mm.
The Adapter for battery screw has an M14 external thread on one side, on which the five Tools let fasten. On the other hand there is a hexagonal insert, which can easily be used in common cordless screwdriver recordings can be clamped. In the middle of the adapter there is a wider area, which serves as a stop for the tools and, like the tool flanges, has two flattened sides.
That was the result of our practical test
Does the manufacturer keep its advertising promises?
ℹ️ Our practical test has the highest relevance and therefore the most weight. Here the product has to undergo a wide variety of criteria and tests. We check the functions and product promises of the test article.
| Criterion | Remark | Points scored* |
|---|---|---|
| assembly of the tools | Fast screwing in, precisely fitting thread | 100 points |
| Drilling with the drill bits | Fast and clean drilling with the angle grinder | 100 points |
| Working with the finger grinder | Precise processing of edges possible | 100 points |
| Use with an adapter in the cordless screwdriver | Adapter works, but drilling requires more skill than with the angle grinder | 80 points |
| Total | 95 points |
*The maximum number of points is 100 points
We start the practical test with the use of the tools in the Angle. The diamond core bits can be easily screwed on with the thread. The angle grinder is ready after just a few seconds ready to use.
An ordinary one serves as the test object tile, as it is also used in bathrooms. For the drilling a hole the tool is held at a 45° angle to the surface as described in the instructions. Due to the reduced contact area, a sickle-shaped indentation is quickly ground into the tile. The angle grinder can be used precise lead, the tool does not jump away. The hole is created exactly where it is intended. When an initial indentation is present, the tool is slowly tilted while continuing to drill until it perpendicular stands to the surface. Now the drilling can be completed. The drilled holes have almost smooth edges, including the edges of the Drilling do not burst. This applies to both large and small holes.
After drilling, you should wait for a short while because the tool is very busy heiß becomes. After cooling, it is as easy to change as it was mounted. In our test, the core after drilling as a disc in the tool. With the help of pliers or a screwdriver, this can be easily removed from the tool, but with a little patience you can also do this with your fingers. The recesses on the edges of the diamond drill bits prove to be very helpful here.
In the next step we test it finger grinder. It is mounted on the angle grinder in exactly the same way as with the diamond core bits. In contrast to the diamond core bits, the working surface is not at the tip of the tool, but on the side. The targeted Expand one drill hole, as well as the form-accurate one Edit of tile edges succeeds in our test perfect.
In the last part of our test we use the diamond drill bits in the Cordless Screwdriver. For this purpose, the tools are first on the Adapter screwed, which in turn can be clamped in the cordless screwdriver. This is also done quickly. However, drilling is possible with the cordless screwdriver not quite like that precise like the angle grinder. Due to the significantly lower tool speed despite the second gear, the tool tends to jump away. The cordless screwdriver has to come with you two hands and a firm grip in order to set the hole exactly at the intended point. However, once the beginning has been made and the first deepening is successful, succeed the rest of the hole just as well as with the angle grinder. This means that the diamond drill bits can also be used with a cordless screwdriver. However, who the Choice should reach for the angle grinder.
Overall, the Fairmo diamond drill bit set performed well in the practical test very well. With the Diamond drill bits holes can be drilled precisely and quickly, and with the finger grinder work out the finer points. through the Adapter the tools can also be used in a cordless screwdriver, but the use of an angle grinder is recommended.
Price-performance ratio
and consumer reviews
ℹ️ Finally, let's talk about how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend a purchase? We also examine consumer reviews and verify that the critical and positive reviews are actually justified.
| Criterion | Remark | Points scored* |
|---|---|---|
| Price-performance ratio | Very good quality in the middle price range | 70 points |
| rating cut | 4,9 out of 5,0 on Amazon | 95 points |
| Total | 83 points |
*The maximum number of points is 100 points
On the platform Amazon Consumers give the product an average rating of 4,9 stars given. It is often criticized that using it in a cordless screwdriver requires some skill. Many customers like the good functioning in the angle grinder and the finger grinder. We were able to confirm these points in our practical test.
For equivalent products, prices are quoted on the Internet from up to € 125 required. Very inexpensive products are already available from € 55. The Diamond core bit set from Fairmo is currently at a price of 97,90 € thus in middle price segment. For the quality and scope of services you get, that is reasonable price ratio.
Gesamtergebnis
| weighting | Points scored* | |
|---|---|---|
| 1. Packaging & Labels | 10% | 97 points |
| 2. Package Contents & Instructions | 10% | 97 points |
| 3. Product Processing & Appearance | 20% | 96 points |
| 4. In the practical test | 40% | 95 points |
| 5. Price/Performance & Consumer Ratings | 20% | 83 points |
| Total | 93 points |
The Diamond core bit set of the brand Fairmo therefore receives one from us Overall score of 1,4 and has thus been successfully certified for our test seal. The test was Test period 12/22 carried out and entered into our database under the license number 221109006 guided. You can find more information about our testing procedure at www.prüfengel.de/test procedure.
Test result:
1,4
