This type of application seems tailor-made for the use of MagSpheres. Ceramic hollow particles are available in selected size ranges, which can be used in both mineral and polymer-bound form. The advantages are obvious. An optimal range of particle sizes can be created. The balls open up a defined pore space which improves the retention of coolants and abrasives on the medium. In the case of larger parts which need to be moved, the reduction in density is an undeniable advantage. The MagSpheres offer an optimal performance at an excellent price - something that should be considered by all developers.