Boring, profile turning, internal grooving, thread turning, chamfering, axial grooving, drilling and grooving: The Supermini and Mini tool systems are multi-talented. They can be adapted and used for numerous machining operations. The focus of the tool systems is on boring of smaller diameters up to about 30 mm. Horn also offers the systems with suitable chip breaking geometry for reliable machining and to prevent chip jamming.

One of the biggest challenges in internal machining is the formation of long ribbons of swarf. Depending on the material, boring often leads to long chips. They wrap around the tool, clog bores or, in the worst case, lead to tool breakage. This is where chip breaking geometry can help. It guides and shapes the chip and causes it to break. Previously, specially laser-cut or ground chip breaking geometries were used. However, this was associated with increased cost of the insert. With the new Supermini type 105, Horn has succeeded in developing a universal boring tool with sintered chip breaking geometry. The tool offers high process reliability thanks to good chip control. The cutting geometry extends far into the corner radius of the insert. It ensures good chip control, even with small infeeds. The geometry can be used universally for different material groups and is suitable for internal, face, copy and reverse turning.

The Supermini carbide insert is used for machining bores from 0.2 mm to around 10 mm in diameter. Horn developed the blank of the tool as a teardrop shape. It enables precise, large contact surfaces in the tool holder, which results in greater rigidity of the overall system. Furthermore, the teardrop shape prevents the insert from twisting, which leads to consistently precise positioning of the tool tip. With long tool overhangs, it reduces deflection and minimises vibrations during turning. Depending on the application and the diameter to be machined, Horn offers the insert in three different sizes (types 105, 109 and 110) and different blank types. All variants enable an internal coolant supply directly to the cutting zone. The Horn tool portfolio contains around 2,500 different standard variants of the Supermini. In addition, Horn has solved users' problems with countless special solutions.

The face-screwed inserts of the Mini range are among Horn's core products. The tool system is suitable for turning and milling applications. The precision tools have proven particularly effective for boring and internal grooving. With the low-vibration carbide tool holders, the inserts produce good surface finishes even with longer overhangs and guarantee a high level of process reliability. The Mini-System's broad portfolio offers inserts in various sizes for machining different internal diameters, as well as various geometries and substrates and CBN or diamond tips.