Three tools, one goal: perfect fillet weld seams.The new LUKAS tools for machining fillet welds
The machining of fillet welds is extremely demanding in terms of precision, material removal and surface quality. Specialised tools are indispensable for ideally smoothing welded joints, removing weld spatter and achieving an even surface. LUKAS-ERZETT offers professional solutions with the U-Edge Pro fillet weld grinding disc, the V2 Edge CeramicAd lamellar flap disc and the SLTflex CeramicAd lamellar flap disc. These high-quality tools will help you achieve perfect results when machining fillet welds. Quickly, precisely and efficiently.
Efficient fillet weld machining with LUKAS-ERZETT: the LUKAS fillet weld grinding disc set
With more than 85 years of experience in developing and producing high-quality milling, grinding, polishing, cutting, drilling and cleaning tools and special solutions, tool manufacturer LUKAS-ERZETT also offers its customers first-class, efficient solutions for machining fillet welds. After all, fillet weld seams, edges and adjacent surfaces can only achieve the desired quality with precise finishing.
Typical fillet welds are frequently found on T-joints, corner joints and overlap joints where two metal parts meet at a particular angle (e.g. 90 degrees) and are welded together.

Fillet joints have to withstand heavy loads. This means that precise finishing is crucial for eliminating unevenness, removing weld spatter and creating a smooth surface. Machining the transition areas between two surfaces of a workpiece (the edges) is also crucial. Edges are deburred, rounded or chamfered by precise grinding to improve the stability and reliability of the components.
The U-Edge Pro fillet weld grinding disc, the V2 Edge CeramicAd lamellar flap disc and the SLTflex CeramicAd lamellar flap disc from LUKAS-ERZETT cover all the relevant areas of application when grinding fillet welds and the adjacent surfaces and edges. Thanks to the fillet weld grinding discs, professional finishing is effortless and ensures precise, smooth and resilient welded joints, wherever precision, flexibility or robustness is required.
U-Edge Pro fillet weld grinding disc from LUKAS-ERZETT: greater precision and efficiency when machining fillet welds

A revolutionary solution for precisely grinding fillet welds: the U-Edge Pro grinding disc from LUKAS-ERZETT sets new standards in the machining of weld seams and eliminates the need for rough and standard grinding discs when machining weld seams. In contrast to conventional grinding tools, the grinding surface of the LUKAS U-Edge Pro grinding disc is not on the flat side, but on the edge (end face) of the disc. This enables precise and pinpoint machining of fillet weld seams as well as tight corners, edges and small surfaces.
Whether for regrinding, grinding during corrective welding, cleaning, paint stripping or making visual improvements – the radial abrasive surface of the disc makes the U-Edge Pro LUKAS fillet weld grinder the ideal solution for applications that require maximum precision.
Another advantage of the U-Edge Pro is the integrated edge protection, which reliably protects the workpiece from being damaged.
Thanks to its multiple layers of abrasive cloth, the patented U-Edge Pro offers consistent results down to the last abrasive grain, as well as a long tool life. The U-Edge Pro fillet weld grinding disc from LUKAS-ERZETT is available in different grain sizes and is suitable for machining steel, alloyed/tempered steels, cast iron and titanium as well as aluminium and other non-ferrous metals/alloys.
LUKAS V2 Edge CeramicAd lamellar flap disc: carry out challenging work on surfaces, edges and fillet welds flexibly, precisely and efficiently
The LUKAS V2 Edge lamellar flap disc with CeramicAd was developed for the toughest jobs, in particular for machining tempered steels, scale surfaces and coated surfaces. The V2 Edge with CeramicAd offers an impressively long tool life paired with precision and high removal rates. The special feature of the V2 Edge with CeramicAd is its design with the extra-large overlap of the patented sickle-shaped flaps. This lamellar flap disc can therefore be used to grind both the flat sides and end faces.

In other words, the LUKAS-V2 Edge with CeramicAd also enables precise machining of complex geometries and shapes with hard-to-reach areas such as fillet welds. Work such as cleaning surfaces or chamfering edges can also be carried out precisely and efficiently without changing tools.
The multi-layer abrasive coating ensures that the flaps are always as sharp as when the tool was first used – fresh abrasive flaps are exposed to replace worn flaps, ensuring consistent quality and a long tool life. Further advantages of the V2 Edge with CeramicAd when grinding fillet welds include a 50% reduction in vibrations and noise emissions, high stability and flexibility, as well as its high breakage resistance.
LUKAS SLTflex CeramicAd lamellar flap disc: for challenging work on uneven surfaces and hard-to-reach areas such as fillet welds

The LUKAS SLTflex CeramicAd lamellar flap disc with the advanced CeramicAd abrasive offers maximum flexibility and good removal rates when working on hard-to-reach areas and uneven surfaces of materials such as steel, alloyed/tempered steels and cast steel. The SLTflex CeramicAd lamellar flap disc can be used radially and on end faces – and is therefore also extremely suitable for precisely grinding fillet welds. The small resin core of the SLTflex CeramicAd with the practical M14 thread allows for a large flap overlap, which makes the lamellar flap disc flexible and easy to handle.
The patented sickle-shaped flaps and their arrangement are further benefits of the SLTflex CeramicAd. This reduces noise and vibrations by 50%, enabling faster and more precise work for better surface results. The multi-layer abrasive coating ensures a long tool life, consistently sharp flaps, and enables a homogeneous grinding pattern even on end faces.
In short: the flexible usage, high precision and long tool life make the LUKAS-SLTflex CeramicAd the perfect alternative to conventional rough grinding discs, especially when it comes to machining fillet welds and meeting the highest standards for surface quality.
For informed decisions: the free fillet weld grinding disc trial set from LUKAS
Test it yourself, decide for yourself: the LUKAS trial set gives users the opportunity to test the U-Edge Pro fillet weld grinding disc, the V2 Edge CeramicAd lamellar flap disc and the SLTflex CeramicAd lamellar flap disc at their leisure.
Because everyone has individual requirements for machining fillet welds and surfaces. The free trial set combines three powerful tools that cover all the relevant areas of application for grinding fillet welds. In this set, everyone will find the tool that perfectly suits their needs, whatever their requirements in terms of precision, flexibility and robustness. And the experts at LUKAS-ERZETT are certain: the set contains at least one ideal grinding disc for every user for machining fillet welds.
Request your fillet weld trial set now: the perfect grinding solution for machining fillet welds from LUKAS-ERZETT
Are you looking for the perfect tool for machining fillet welds? If so, take the opportunity to test the new LUKAS U-Edge Pro, V2 Edge and SLTflex fillet weld grinding tools today. You can find more information and request a free fillet weld trial set at www.lukas-erzett.com/en/weld-grinding-discs-set-professionals/. You’ll see that the LUKAS U-Edge Pro, V2 Edge and SLTflex fillet weld grinding tools deliver first-class results and cover many different aspects of fillet weld machining.
The experts at LUKAS-ERZETT are available to answer your questions and give individual advice by telephone or email. You can also find more information and an overview of the entire LUKAS tool range here: lukas-erzett.com/en/