PATTEKN MAKING 



121 



JPowel 



this solution, rubbing on with a piece of waste. A thin coating of 

 copper will thus be given to the zinc (also to steel or iron). 

 When applied to finished surfaces they should be rubbed dry, as 

 iron or steel will be rusted. 



When the curves of the template will allow of sawing, the 

 zinc template is easily shaped by placing a piece of zinc of the 

 necessary size between two boards, and nailing them together. The 

 required shape having been drawn on the upper board, the whole 

 may be sawed to the form required on the band saw or scroll saw, 

 but preferably on the latter, with a fine tooth narrow saw blade 

 which will give a smoother edge to the zinc. If the boards are 

 firm, the metal will offer no resistance whatever to the saw, nor 

 will the saw be perceptibly dulled. For small curves, lay the zinc 

 on a piece of hard board, and with a pair of sharp pointed dividers 

 the zinc can be scratched half way 

 through its thickness, then by turning 

 it over and placing the dividers in the 

 same center, the other side may be cut 

 in the same way, or so nearly through 

 that it will break off. This affords a 

 truer and more uniform curve than can 

 be obtained in any other way. The legs 

 of the dividers must be stiff and firm 

 so as to be entirely free from vibration. 

 After cutting, the sharp edges of the 

 zinc may be dressed with a fine double- 

 cut file, or better with fine emery cloth 

 or sand paper rolled over a wooden holder. 



The lathe should always be stopped Fig. 222. 



when testing the work with the template, and great care must 

 be taken to make the two ends of the pattern symmetrical. 



When the turning is nearly completed the template itself may 

 fee tested by reversing the ends. If not true it should be filed to 

 'the proper shape as shown by the drawing. 



The branch e must be turned in the same way as described for 

 the main part of the pattern which is pared off, or planed off in a 

 large pattern, to the exact size of the base of the branch, and when 

 the pattern is large and heavy, one or two wood screws should be 



