Every workholding device has its advantages but also its limits when machine operators try to use it universally. And, as we all know, machine operators have a natural aversion to changing chucks. That’s exactly why the workholding provider HAINBUCH now offers the solid MANDO segmented Mandrel that can be attached to a new 3-Jaw Chuck B-top3 – in effect it becomes a Mandrel-in-the-Chuck. And it is accomplished just as fast as everybody is used to from the HAINBUCH clamping program: Within two minutes and without having to take the jaw chuck off the machine! Precise clamping and unconventional machining of work pieces are now possible. Especially if the bores are small and as far as accuracy and rigidity are concerned, when a normal jaw chuck had its limits, the HAINBUCH building block system offers great advantages. And the concentricity of the I.D. clamping is better than 5 µm!