The greater part of riveted work, however, requires two people. The size and the type of gun used for a particular job depend upon the size and alloy rivets being driven and the accessibility of the rivet. For small, soft alloy rivets, the fast-hitting gun is preferable. There will be places where a conventional gun cannot be used. For this type of work, a corner gun is employed.
Larger rivets require greater air pressure.
The approximate air pressures for four of the most common rivet sizes are given in table 13-1. The one-shot gun is designed to drive the rivet with just one blow. It is larger and heavier than other types and is generally used for heavy riveting. Each time the trigger is depressed, the gun strikes one blow. This gun is rather difficult to control on light-gauge metals.