Home instruction for sheet metal workers . urse are galvanized iron and zinc, muriatic acid isused as a flux. To transfer the flux from the glass tumblerto the work to be soldered a small brush is employed. Thesebrushes are made from scrap strips of tin formed so thatinto one end some hair from an old brush can be placedand the tin rolled up over it and flattened at the end, Fig. 16,the brush being 4 or 5 in. long when completed. In this connec-tion it is well to remark that soldering coppers can be obtainedin any weight from 1 lb. to 10 lb. to the pair. Those used in thework under considerati
Home instruction for sheet metal workers . urse are galvanized iron and zinc, muriatic acid isused as a flux. To transfer the flux from the glass tumblerto the work to be soldered a small brush is employed. Thesebrushes are made from scrap strips of tin formed so thatinto one end some hair from an old brush can be placedand the tin rolled up over it and flattened at the end, Fig. 16,the brush being 4 or 5 in. long when completed. In this connec-tion it is well to remark that soldering coppers can be obtainedin any weight from 1 lb. to 10 lb. to the pair. Those used in thework under consideration are 4 lb. to the pair. The larger thecoppers the more heat they will retain without being put intothe furnace every few minutes to be reheated. Tools and Preparation for Soldering Work 23 Having tinned the coppers and having dipping solution, acid,brush and solder in readiness, the first lesson in soldering is tostrip the various pieces just cut from the full size patterns in2. To cut the strips needed set the gauge on the squaring Fig. PARTLY ROLLED FINISHEDFig. 16. Method of Making Acid Brush. shears at £4 m- from the blade and cut a sufficient number ofstrips from 30 in. wide iron, and for the work the ends of thestrips must be cut perfectly square. Cut a strip equal in lengthto the circumference of the circle pattern No. 1 in Fig. 2, and,
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
