Printed from: https://conservationhandbooks.com/toolcare/sharpening/bolsters-cold-chisels-and-wedges/
These tools are made from extremely hard steel, and sharpening them may prove difficult. They are not designed to cut, but to split and fracture, and although they need not be sharp, some edge is needed. Wedges are often required to travel beyond their length into the wood. Therefore ensure they have no shoulders to...