Kong[Moderator]
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About the polishing...
May 30, 2009,18:54 PM
Hi Bob
It is likely to be a 2 step process.
However at that moment, the thin polishing wheel was polishing another case.
More pictures, as they are self-explanatory
The larger softwheel, is a buffing wheel, not sure if the material is cotton. I think solid bar compound seen on the workbench.
Kong
Unpolished piece.
Note the sheen on the chamfered all round...
Beside the loupe, I think it is a solid bar compound.
Thinner wheel on another case...
Various parts to be polished...
Comments:
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Watchmaking at Bulgari - Part 1 Casemaking at H.Finger
By: DonCorson : April 8th, 2009-11:17
Ready for a long day investigating the industrial strength of Bulgari. Our meeting place is the Hotel Palafitte in Neuchâtel. Very stealthy, you would never suspect a 5-star hotel here, hiding behind the rushes just at the waterline of Lake Neuchâtel. Our...
Soldering
By: BDLJ : May 28th, 2009-00:02
The reason I asked was that this was in Don's post: "These Bulgari Bulgari cases are also first stamped in a procedure with 7 stamps with a heat treatment in between each time to create the logo. Then the cases are turned and polished. Finally the lugs wi...
Not shown the process...
By: Kong : May 28th, 2009-00:26
I am eager to see too! From description is like a reflow process with solder-paste in between the joint. I guess it should have a fixture to hold the case and tubular-lugs in place before passing through the reflow oven. Some pics of the before and after ...
Very cool, Don!
By: dxboon : May 28th, 2009-01:17
How do they solder on the lugs and get such a seamless case? I confess, I've never inspected a Bulgari watch that closely, but I don't ever remember noticing any remnants of the soldering process. Don't ask me why, but I love to see the watchmakers wearin...
Thanks, Don
By: masterspiece : May 28th, 2009-20:42
for the in-depth report. Questions: in the polishing room, is it a two step process? It appears that the first photo's polishing wheel is quite thin and the second photo is much larger. Also, is it a cotton buffing wheel and is a polishing compound used? ...
About the polishing...
By: Kong : May 30th, 2009-18:54
Hi Bob It is likely to be a 2 step process. However at that moment, the thin polishing wheel was polishing another case. More pictures, as they are self-explanatory The larger softwheel, is a buffing wheel, not sure if the material is cotton. I think soli...
Thanks, Kong.
By: masterspiece : May 30th, 2009-21:59
I see that in a few pictures the Bulgari Bulgari bezel is present. I would assume that some of the polishing compound would get trapped within the logo type? great pictures! Aloha, Bob
Sharp Bob!
By: Kong : May 30th, 2009-23:13
There should be loose compond trapped after polishing the BVLGARI BVLGARI. Beside ultrasonic cleaning, there should be manual process of using air-gun to force out the residues. A zoom in of a sample piece (not production piece) ... note the sharp definit...
THx Don
By: lien : May 29th, 2009-07:56
Always exciting to see how the works r done