I just made a few mini planes, using 1 old shoulder plane blade and 1 new one from the mujingfand plane LV sells. I want to make a few more and
thought of cutting down a cheap, old or new 1\2 inch or 5\8inch chisel to get the blades. I was wondering if possibly the new chisels, like narex, are hardened and tempered all the way through? is there a way to know if the old chisels are hardened all the way? I am not interested in doing it myself at the moment.
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