- Joined
- Jun 7, 2013
- Messages
- 10,104
I have lead hammers and use them for all my shop work; I have the mold and re cast them when they get beat up. Plain lead is a poor material for hammers, it is too soft, the ideal temper being automotive wheel weights, but every time it is melted, it loses antimony from oxidation, so occasionally, the antimony has to be added in the form of a master alloy containing 30% antimony and 70% lead. Pure antimony has too high a melting point to be used in that form and also produces toxic fumes in purple smoke when melted. One time, I made a batch of low grade babbitt for a job I was working on for a historic water powered grist mill in my area, made it using pure antimony melted first, then lead added to the melt, making my own master alloy, which was later added to more lead and pure tin; yes, I specially bought and used a metal fume respirator specifically for metals such as antimony, and I did not suffer any ill effects.