This is a very old method of bending lead pipes, and answers every
purpose for long, easy bends. Proceed in this way: The length of the
pipe to be 5 ft., fill and well ram this pipe solid with sand 2 ft.
up, then have ready a metal-pot of very hot sand to fill the pipe one
foot up, next fill the pipe up with more cold sand, ramming it as
firmly as possible, stop the end and work it round as you did the
water bend, but do not strike it too hard in one place, or you will
find it give way and require to be dummied out again, or if you cannot
get the dent out with the dummy send a ball through (see "Bending with
Balls").