The set-up on a capacitor discharge stud welding application refers to all the things the operator must do to stud weld a particular fastener. The operator must set the weld gun up and adjust the voltage settings on the power source. The diameter of the fastener, along with the base material and the weld stud material, are considered. Obtain the proper accessories for the diameter of weld stud you will be using.
Some welders use a chuck and some use a B collet.
With a collet, an adjustable stop goes into the back of the collet before it is inserted into the gun shaft. This stop can be cut to the proper length. With a chuck, there is a set screw inside that adjusts the stop position. A spark shield is installed in the hole in the foot piece, and held with set screws. The spark shield is used to protect the operator from splatter and to ensure that the weld stud is perpendicular to the weld surface.