Sandpaper sharpening block

一个非常小巧的磨刀块，需要安装两个磁铁（D=4mm H=5）和一个1cm M2螺丝，一个M2热熔螺母。 你可以从一大块砂纸上剪一条下来装上去。 小巧，廉价，但有效。很适合我这种懒得去买磨刀器磨刀石这些必要但不常用的“日用品”的人。 A very small grinding block that requires the installation of two magnets (D=4mmH=5) and a 1cm M2 screw, an M2 hot melt nut.You can cut a strip from a large piece of sandpaper and put it on.Small, inexpensive, but effective. It's perfect for people like me who are too lazy to buy knife sharpeners, whetstones, and other necessary but infrequently used "daily necessities".