Friday, 5 September 2014

Work cycle for realizing the head of Michelangelo’s David with “Breton Contourfive”


1 - Average dimensions of the starting block: 400x400 mm, height 600 mm. (15.7x15.7x23.6")

2 - Processed material: I do not remember the exact name of the material; it was a medium-hard marble from Georgia containing much quartz. 


3 - Rough-hewing time using the disk: approx. 2 hours.

4 - Rough-hewing speed / disk feed time:
   1.500mm/min for a depth of 25mm (climb milling)
   59"/min for a depth of 1" 
   

   1.800mm/min for a depth of 15mm (conventional milling)
   70.9"/min a depth of 0.6"


5 - Time required for rough-hewing with disk: approx. 5 hours.


6 - Roughing out speed / disk feed time:
   1.500mm/min for a depth of 25mm (climb milling)
   59"/min for a depth of 1" 
   

   1.800mm/min for a depth of 15mm (conventional milling)
   70.9"/min a depth of 0.6"


7 - Time required for finishing with disk: approx. 2 hours.

8 - Finishing speed / disk feed time: 3.500mm/min (137.8")
    step = disk thickness.


9 - Time required for working with tapered tool: approx. 10 hours.

10 - Finishing speed / tool feed time: 1.200mm/min (47.2")
       step = 1mm (0.04")

I hope these figures are interesting for who works in the sector of sculptures.
For INFO and price ask to mail@breton.it.
We’ll get back to you promptly.
Well, that’s all for today, thanks for your attention.
Bye-bye
 
Sergio Prior

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