Fig. 86 shows how a pipe or the like may be held in an ordinary vise while being threaded. An ordinary pair of pipe pliers are used to hold the pipe and these in turn are held between the jaws of an ordinary vise. On large pipes a vise with swivel jaws would be preferable, but an ordinary vise will answer the purpose by putting on one end of the pliers a small rod or the like to conform with the angle of the pliers and the jaws of the vise. This, of course, is done to relieve the rivet in the pliers from unnecessary strain.

Fig. 86 - An improvised pipe vise.