The materials required for this joint are as follows: 10 inches of 5⁄8-inch extra strong lead pipe; one 1⁄2-inch brass sink bib for lead pipe; one pot of solder, paste and paper, 1⁄2 and 1⁄2 solder, catch pan, and supports.
To prepare the lead pipe after cutting from the coil and squaring the ends with the rasp is very similar to the 5⁄8-inch branch joint. The center of the pipe is marked and a hole is made in it with the tap borer large enough to admit the bending irons. The hole is enlarged with the irons. A good substantial collar is made around the hole to hold the bib in place. One and one-eighth inches are marked off on each side of the branch and an easy curve connects the two. The paper is then cut out and pasted on the pipe after it has been scraped with the shave hook.
Fig. 32. - Bib.
The end of the brass bib is filed bright and tinned with the soldering iron and 1⁄2 and 1⁄2 solder. Before the tinning is done, paper is put on the brass, leaving only 11⁄8 inches exposed. The tinning must be thoroughly done, or it will come off and have to be re-tinned.
The bib is fitted into the lead opening and the collar is forced against the bib to hold it in place and prevent any solder from leaking through into the bore of the pipe. The bib must not extend too far into the lead pipe or it will obstruct the flow of water. The lead pipe is laid on two bricks the same as the round joint. The bib is laid on an angle of 45° pointing away from the wiper. Some bricks can be piled up to the right height to hold the bib in place and a solder strap can be made to hold it steady. The lead pipe can be held steady by weighting each end. The catch pan is now placed under the joint and everything is ready for wiping.
When the solder is hot, getting the heat on the pipe is started. Solder should be dropped oftener on the brass bib than on the lead pipe. It takes more heat to heat the brass thoroughly than it does the lead. If this is followed out, little difficulty will be had in getting up the heat and in wiping. Use the branch cloth for wiping and make sure that all edges are perfectly cleaned before making the final strokes. As this is the only position that the joint will be wiped in, practice should be continued until perfect joints can be obtained.