This is a manual leather skiving machine. You can find a how-to video by searching "革漉き機 M2" (leather skiving machine M2) on a popular video website. Please secure it to a table with clamps or similar when using. I have used it a few times after purchasing. It takes some getting used to, but I think you can use it without hesitation because there are videos available. I think the fact that it doesn't make noise when in use is a merit. Personally, I felt that skiving at an angle was the most suitable method. Compatible with both 9mm wide cutter blades (2-split 40mm) and general double-edged razors (37mm). 9mm wide cutter blades such as OLFA Tokusen Kuroba (small) etc.