This knife sharpening machine is designed to be used for the most common stones with a length of 150mm. The set includes 3 sharpening corner tables with the most famous edge sharpening angles of 15, 20, and 25 degrees. Among other things, you will need to purchase 2 small springs with a diameter of 5 mm and glue rubber pads on the legs. As rubber pads, a small smartphone pad that is used in a car is great. The model is adapted according to its parameters for both PLA plastic and ABS printing. You can choose the type of printing plate yourself. It is recommended to print with a layer of 0.16mm, but you can print with a layer of 0.20mm. The approximate printing time of all the parts on one table is about 7 hours with a layer of 0.16mm. This sharpening system has no analogues and the authorship belongs entirely to its author. According to its characteristics, this sharpening system is close to professional sharpening systems made of metal.