In a search for good metals to use for tool making I had a thought. Why couldn't you use used jointer knives or planer knives? They are high speed steel. Seems you could grind off the sharp edge and cut to the length you want and then put a new edge on the end. I know some of the knives are not thick enough but the knived from my dewalt are pretty thick.
What do you guys who have made your own tools think? Have you every tried this?