Abrasive stone for ""opening"" a diamond discDisc for renewing the sharpness of the blade, any diamond disc can be ""opened""and lose its cutting properties. This happens particularly often when cutting hardmaterials such as porcelain stoneware, marble, non-abrasiveceramics, etc. Diamonds fall out and new ones don't open, due to the cutting processmaterial does not have enough abrasive, then the blade burns and does not cut. There is a riskdamage to your blade. The disc needs to be sharpened. Sharpening means multiple cutson abrasive material MECHANIC ABRASIVE stone sharpens diamond discs perfectly. It correctlycombines the size and strength of the abrasive grains, specially selectedfor opening diamond tools. To do this, it is necessary to performseveral longitudinal cuts with a blunt diamond layer. With an angle grinder wemake cuts up to 5 mm deep. For tile cutters, we use blades up to 10 mm deep.It is recommended to open the discs for ceramics on the light side of the bar,for granite, marble on the dark side. On average, 10-15 cuts are required, andyour blade is sharp again. The size of the abrasive belt is 250 * 50 * 25 mm. For bevel cuttinggrinders, it is recommended to clamp the tape with a clamp.