Handy man's workshop and laboratory . ade of No. 16 B. & S. wire. This willprevent kinking of the hose when the iron is in use. The pipe A is covered with asbestos or some other poor con-ductor of heat / to form the handle. The action of the iron is asfollows: The gas enters at the pipe A through the hole in theplug E, and mixes with the air that enters through the holes mixture passes out through the holes C in the reducer at theopposite end, where it is to be ignited. The flame is deflectedagainst the iron F by the shield G. This makes a very efficientiron that will solder continuously
Handy man's workshop and laboratory . ade of No. 16 B. & S. wire. This willprevent kinking of the hose when the iron is in use. The pipe A is covered with asbestos or some other poor con-ductor of heat / to form the handle. The action of the iron is asfollows: The gas enters at the pipe A through the hole in theplug E, and mixes with the air that enters through the holes mixture passes out through the holes C in the reducer at theopposite end, where it is to be ignited. The flame is deflectedagainst the iron F by the shield G. This makes a very efficientiron that will solder continuously.—12 HANDY MAN S WORKSHOP AND LABORATORY 121 HOME-MADE BLOWPIPE The blowpipe shown in the accompanying illustration will hefound a very useful adjunct to any mechanics workshop. Fortempering tools, heating soldering irons, brazing, and meltingmetals in a crucible, it answers the purpose of the more ex-pensive outfits, which the amateur as a rule does not feel able toinvest in. Furthermore, there are no bulky air tanks and pumps. Fig. 136—Details of the blowpipe to take up room, which to most amateurs means a great deal. Theone illustrated can easily be carried in the pocket, so it is evidentthat the space required is indeed small. To construct one of thissize, about 6 feet of copper or brass tubing 5/16 of an inch out-side diameter will be required, also 2 feet of band iron about 1/16of an inch thick by Y$ of an inch wide. Before bending thetubing to the required shape, it is necessary to fill it with lead orsand to prevent buckling. Either of these will be found to give 122 HANDY MAN S WORKSHOP AND LABORATORY good results, though for the smaller sizes of tubing lead is pre-ferable. It is not advisable to attempt pouring the molten leadin the tube, as it cools too rapidly. The safest way is to use wiresolder. A piece two or three feet longer than the tube will as arule be enough. The lower end of the tube will have to be closedby hammering it down. Insert the wire solder, h
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