34 



PATTERN MAKING 



They are indispensable to the wood turner for measuring the 

 diameters of cylindrical forms and other work while being turned 

 to required dimensions in the lathe. When used by the pattern 

 maker, they may be applied while the wood is revolving, until it 

 has been reduced almost to the required dimensions; after which, 

 when the calipers are used, the lathe should be stopped, to prevent 

 the surface from being marked by the points, 'and in order to 

 obtain exact measurements. 



The calipers should not be pushed or forced over the piece. 

 but in passing over the finished cylinder, the points should touch 

 it lightly without springing the legs of the calipers ; otherwise the 

 required dimensions cannot be obtained with accuracy. 



MISCELLANEOUS TOOLS. 



There remain to be described a few tools, which, while neces- 

 sary, are so common as hardly to require either illustration or 



Fig. 67. 



description. Among these are the hammer, the best form of which 

 for the pattern maker is shown in Fig. 07, and the mallet, of 



which the best form is 

 shown in Fig. 68. 



A mallet that is to 

 be used on the handle 

 of firmer chisels and 

 other pattern makers 



Fig. 68. 



tools, should not be 

 made of hickory or of 



', nor have hard-rubber or hard-fibre facing. Mallets 

 thus made soon mar, splinter, and destroy the tool-handles on 



