into the fire to keep it burning brightly, not so much that the fire is
blown up through the top of the coal pack. To prevent the fire from going
out between jobs, stick a piece of soft wood into it and cover with fresh
wet coal.

_Tools._--The _hammer_ is a ball pene, or blacksmith's hammer,
weighing about a pound and a half.

The _sledge_ is a heavy hammer, weighing from 5 to 20 pounds and
having a handle 30 to 36 inches long.

The _anvil_ is a heavy piece of wrought iron (Figure 49), faced with
steel and having four legs. It has a pointed horn on one end, an
overhanging tail on the other end and a flat top. In the tail there is a
square hole called the "hardie" hole and a round one called the "spud"
hole.

[Illustration: Figure 49.--Anvil, Showing Horn, Tail, Hardie Hole and Spud
Hole]

_Tongs_, with handles about one foot long and jaws suitable for
holding the work, are used. To secure a firm grip on the work, the jaws may
be heated red hot and hammered into shape over the piece to be held, thus
giving a properly formed jaw. Jaws should touch the work along their entire
length.

The _set hammer_ is a hammer, one end of whose head is square and
flat, and from this face the head tapers evenly to the other face. The
large face is about 1-1/4 inches square.