As the title says, there’s a movie where a guy is training to be a warrior or a ninja or some faster than a human being, of sorts. At one point he’s working at a textures/fabric shop and the owner of the shop is teaching him his craft. Part of his teachings is that he has to put his hand through a loom without getting it hurt or cut. That’s all I can really remember, I think it was a fairly big release, maybe from the late 90s or 2000s. Thanks!