I found this tool and was wondering IF it had any uses in machining. It is a marker with a KNIFE in it (seeIt cuts and marks at the same time. They sell it for crafting but I noticed they also have alcohol based versions and that is permanent like a Sharpie marker so it will work on metal.
I am wondering if there is any practicle use for this in machining? I ordered a sample but currently am not exactly sure what I will do with it. Any ideas?