- 1). Screw the cap onto the end of the pipe.
- 2). Weld around the base of the cap. Go around several times until the bead is built up. Smooth it until there is no lip.
- 3). Chip off any slag from the weld with the hammer. Slag is hollow crunchy residue left when molten metal cools.
- 4). File off any rough or sharp edges using a hand file.