This video is about restoration and repair a 1800's tobacco cutter. While disassembling this cutter, we noticed a crack on the cast iron body and fixed with welding. The blade is too rusty to cut the material it is supposed to, but our sharpening technique made it quite sharp (see the test on a piece of paper). We forgo any tobacco products here for a subjective test.
Needless to point out that safety comes first. So, if you would like to do any sort of technical jobs using tools and machines, roll up your sleeves but please be advised that you need to have proper gears, protections and experience.