I've been wanting to make this video for a while. When I first set out to make a knife from a saw blade I did a lot of research but ultimately was left with more questions than answers. In this video I hope to clear up some confusion regarding whether or not you can harden a saw blade. If you are thinking about making a knife using a saw blade I hope this video is helpful. Thanks for watching.I've been wanting to make this video for a while. When I first set out to make a knife from a saw blade I did a lot of research but ultimately was left with more questions than answers. In this video I hope to clear up some confusion regarding whether or not you can harden a saw blade. If you are thinking about making a knife using a saw blade I hope this video is helpful. Thanks for watching.