Printed from: https://conservationhandbooks.com/toolcare/replacing-hafts-and-handles/mells-and-sledgehammers/
A mell has a cast-iron head. The head must not be hit with a metal hammer, or clamped tightly in a metal- jawed vice, as it may crack. Mells have parallel-sided sockets. A sledgehammer has a forged steel head, and slightly tapered socket. The procedure for rehafting is as follows: Remove the old handle. Clamp...