The Use of Computer-Aided Design (CAD) in Clockmaking - part 3

 

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Once the image is scaled, it is a simple process to trace the outline of the lever, leaving 
extra material to account for bends and unseen portions.  Reference lines, where the 
bends are located, will aid in the final shaping of the lever.  (Fig. 23) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Once the lever and spring have been traced, they can be printed to scale and used as 
templates.  (Fig. 24)  In the case of the sync lever, the template can be cut out and glued 
to a suitable piece of brass and then the brass machined to the trace lines.  (Fig. 25) 
 

Fig. 22:  An imported image

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 is scaled in the CAD program and 

several measurements taken to ensure accuracy.  The needed 
spring and lever can be clearly seen in the picture (circled). 

Fig. 23:  The lever and spring can be easily traced, 
adding extra material to account for bends.

 

Fig. 24:  The tracings can then be printed to scale 
and used as templates for making the spring and 
sync lever.