As far as I can tell, twybils were always made by local blacksmith's. Most older examples look distinctly different and mostly quite crudely designed. They also seem to differ in the way they worked. We asked tool makers Ashley Iles to design a twybil based on the example I had used for a long time The result is the tool we now have for sale, it is nicely balanced and works extremely well. There are leather sheaths specially made to fit.
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