A friend made me a gift, a machined hammer head, made of Uddeholm Hotvar steel, which I finished, heat-treated and made a handle for.
Its 4.3cm wide, 13cm long, with a 34cm handle made of an old oak plank. Weight of hammer head is 1310gr, and together with the handle 1490gr. Perfect!
What was particularly interesting was the heat-treatment. Heat up to
roughly 1000C, quench the first 5cm in soapy, warm water for 30 sec, and
then let the heat of the remaining piece dissipate and do the tempering.
Hotvar's a secondary-hardening hypereutectoid steel. That's going to be an...interesting... microstructure after that kind of thermal history. It's a pity you've not got a spare piece to recreate the cycle on just for micro/macrosectioning.
ReplyDeleteBut that's a lovely, understated finish on a dropface hammer :-)
_Falanx_