Kong
[Moderator]
7855
Sharp Bob!
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 definition of the edges.
Saw a manual 100% inspection of the tubular lug-components before the plating & soldering.
It is good to know that serious efforts were taken to a case....
Under a magnifying glass...
The raw tubular. Every piece, the whole surface is inspected.
Holding and turning with cotton buds so as not to scratch the surface.
The tubular is for the lug-section... each case has 4 tubulars soldered on.
Any blemishes/scratch are marked with a red pencil to indicate reject.
Bob, are you in mechanical work?
Kong
Watchmaking at Bulgari - Part 1 Casemaking at H.Finger
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...
Lugs are not soldered, they are on a solid piece...
Hi BDLJ Write something about it on this sub-post with the rest of the pictures: home.watchprosite.com Hope that helps. Kong...
Soldering
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...
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!
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
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...
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.
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!
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...
