PROJECTS IN SHEET-METALWORK 



241 



FIG. 266. Holding two pieces of tin 

 for soldering. 



Grasp a short piece of wood about the size of a screw-driver 

 handle with a square or beveled end in the left hand, and with 

 it press the two pieces of tin together (Fig. 266). This may 

 also be done by using the bar of solder in place of the stick. 

 With the right hand, grasp the handle of the hot, well-tinned 



soldering-iron, wipe the 

 iron on a cloth or piece of 

 felt conveniently placed on 

 the bench or table on which 

 you are working, touch 

 this iron to a piece of solder 

 and immediately run the 

 end of one of the four "flats" of the iron on the joint (Fig. 

 267) and near edge of the lap. The holding-stick or bar 

 of solder must be 

 kept near the part of 

 the joint being sol- 

 dered. It must be 

 moved from point to 

 point as the iron is 

 moved along the 

 joint. The heat of 

 the iron should heat 

 the joint sufficiently 

 to run the solder on 

 the iron between the lapped surfaces of the two pieces of tin. 

 As the iron moves from one point to another the heated 

 surfaces will cool, forming a soldered joint. The iron must 

 be touched against the solder frequently to renew the sup- 

 ply of solder on the iron. When the joint has been formed, 



FIG. 267. Running solder. 



