6. When castings “shrink” and crack, add pure lead to that in the pot
until the trouble is remedied.
7. Be sure melted lead is of proper temperature, by pine stick test,
before starting to pour.
8. Remove castings as soon as they set, to prevent the mould from
becoming too hot.
9. A perfect casting, that breaks when taken out of the mould, has
probably not been allowed sufficient time to “set” or cool properly.
10. Never use a hammer on the surface of the mould. If a casting should
stick, pry it out.