Proposed is the production of sharpening attachments for domestic appliances such as, for example, food processors or juicers (hereinafter reference will be made to food processors only). An abrasive disk is fastened to a standard attachment base for fastening to the working shaft of a food processor. The attachment with an abrasive disk rotates and food processing blades are sharpened thereon. It is also proposed to put a collar on the attachment to protect bearings from abrasive residue. It is also proposed to produce abrasive disks with catches or non-abrasive inserts for fastening purposes. It is also proposed to fasten an abrasive element on spring-loaded elements. A disassemblable filter for filtering mixtures and liquids is proposed, in which filtering openings are formed by gaps between individual elements of the filter.
