This 3D model is a compact and functional rolling knife sharpener designed for compatibility with sharpening stone discs originally purchased from Temu (link: Diamond Sharpening Stones ), however, it should be compatible with most sharpening discs sold on Ali Express as well. 

The sharpener features two angled sides—15 and 20 degrees—providing optimal sharpening angles for a variety of blades. 

Its knife holder section is engineered to house a total of 16 round neodymium magnets (8mm x 3mm), which securely hold blades during sharpening. The magnet slots are designed with a press-fit tolerance, ensuring the magnets stay firmly in place without the need for glue. 

The print profile includes a pause for magnet insertion, specifically tailored for Bambu Lab printers, however, users printing with other machines should manually insert a pause just before the layer that seals the magnet holes. 

Overall, this model offers a precise, modular sharpening solution with simple, glue-free assembly.