Violoncello "Sleeping Beauty" 1739, Domenico Montagnana


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Dear all, 

I'm about to start making my first cello. 

I'd like to get your insights on the process. 

I'm planing on making the back arching higher the the top arching according to the method described by Torbjörn Zethelius and I'd very much appreciate his comments to this post of mine. I know that the current measurements are with a higher top arching. 

I traced the model according to the method described by François Denis and would very much appreciate his comments too. 

I'm still confused about the rib height though. 

Please feel free to comment and modify my measurements.

A list of measurements follows below. 

1. Length of template and mold - 735 mm

2. Width of upper bouts - 346 mm

3. Width of CC bouts - 245 mm

4. Width of lower bouts - 435 mm

5. Rib thickness - 1.7 mm

6. Height of ribs at end pin - 125 mm (The original one according to the poster is 123 mm)

7. Height of ribs at neck root - 120 mm (The original one according to the poster is 117 mm)

8. Arching height  - top - 32 mm

     8.a. Top thickness - center - 5.5 mm and 4.5 at FF-holes and closer to the edge

      8.b Top thickness at lower bouts - 5.0 mm and  4.0 mm closer to the edge

      8.c. Top thickness at upper bouts   - 5.0 mm and  4.0 mm closer to the edge    

9. Arching height - back - 30 mm

     9.a. Back thickness - center - 7.0 - 8.0 mm

     9.b. Back thickness at lower bouts - 3.8 mm

     9.c. Back thickness at upper bouts - 3.7 mm

     9.d. Back thickness at CC bouts - 4.0 mm

10. Edge thickness of lower and upper bouts - top - 5.5 mm  

11. Edge thickness of CC bouts - top - 6.0 mm

12.  Edge thickness of lower and upper bouts - back - 5.0 mm

13. Edge thickness of CC bouts - top - 5.5 mm

14. Fluting depth compared to edge thickness - 1.0 mm

15. Edge distance from the ribs - 3.5 mm

16. Purfling thickness  - 1.7 mm 

17. Purfling distance from edge - 5.0/ 5.2 mm

18. Corner width - to be determined according to the model and overhang

19. Stop length - 400 mm

20. Neck length - nut to top edge - 280 mm

21. Neck length - nut to neck root - 288 mm

22. Neck and fingerboard thickness at nut - 28 mm

23. Neck and fingerboard thickness at neck root - 34 mm

24. Button width - 28 mm

25. Button height - 23 mm

26. Fingerboard length - 590 mm

27. Fingerboard width at nut - 31 mm

28. Fingerboard width at lower end - 64 mm

29. Fingerboard flank thickness - 8 mm

30. Fingerboard curvature radius - 70 mm

31. Romberg - 9 mm at nut and 22 mm at lower end

32. Fingerboard projection at stop - 81/82 mm

33. Fingerboard overstand at neck root - 21-22 mm (Since the model is very wide)

34. Lining thickness - 3 mm

35. Lining height - 15 mm

Thank you all in advance,

Peace,

Lev 

Montagnana Model.jpg

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