Question about making a razor.
I have a buddy that has a metal shop and makes lots of custom stuff. one of the things he makes is spikes for leather jackets and dog collars and what not.There are alot of metal heads in my area. Anyway the spikes he makes are heat treated and sharpened. I wonder if that means that i could have him make a razor for me.. What kind of metal should i go buy? carbon steel i guess but i don't really know anything about it. i could really use some ideas about what to buy. thank you.