Lead hammer
A lead hammer is a hammer with a metal but comparatively soft head made of lead .
Lead hammers have a heavy head and can therefore deliver a powerful blow, in which, however, the head is slightly deformed, so that the impulse is not exerted immediately but over a (very short) period of time. Lead hammers are rare. Possible uses are, for example, hammering sensitive components such as wheel rims on an automobile, bone surgery or the dentist knocking in crowns when cementing them.