Position of Fingers on
Joint Wiping Pads, 115

— of Soldering Coppers, 71
Potash and Borax, 65

— , Yellow Prussiate of, 65
— , Ferrocyanide of, 65
Pots and Kettles, Brazing,

152
Pot, Melting for Wipe

Joints, 106
— , — , Returning Solder to,

III
— , — , Shop Dirt in the 124
Pouring Solder on the

Joint, no
Precautions Necessary in

Cutting Zinc, 48

— in Wipe Jointing, 121
Prejudice, Overcoming,

Against the Electric Sol-
dering Tool, 133
Preparing Y-Joint for
Brazing, 152

— Chloride of Zinc, 44

— Work for Immersion
Brazing, 149

Pressure and Heat, Chang-
ing Melting Point by, 3

Preventing Coppers from
Burning, 7

— Solder from Dropping
from Wipe Joints, 114

Problem in Tinning, 16
Profitable Coppers Com-
mercially, II
Proof of Oxidation, 6
Properly treated Pipe for

Wipe Joints, 103
Proportion, Sense of, Nec-
eccary in Wiping Joints,
114
Protect Bits from Air, 16
Protecting Fingers while
Wiping Joints, no



Protection of Metal, 6
Protochloride of Tin, 92
Proving Hard Soldered

Work, 68
Prussiate of Potash, Yel-
low, 65
Pulverizing by Chemical

Methods, 54
Pump, Air Leakage in, 27
Purchasing Special Coppers,

13
Pure Tallow, to Obtain, 123



Q



Quick and Sure Heating,
Electric Soldering Tools,
132

Quit Wiping a Joint, when
to, 116



R



Range Boiler Gas Gener-
ator, 63

— , Temperature of Solder
Melting Points, 3

Rapidity of Immersion
Brazing, 151

Rawhide and Leather Han-
dles, 10

Reducing and Oxidizing^
Flames, 31

— Oxide, 8

Removing Excess of Sol-
der, 68

— Superfluous Solder, 98
from Wipe Joints,

115

— Pads from Finished
Wipe Joints, no



INDEX.
