So as I said I'm not sure what to do with this info. I contacted a company with interest in getting a watch DLC coated. They took me to be a watch company and offered to DLC my first samples for 1/2 price. Expecting it to be stupidly expensive, I played along.
Here is the response that I just got:
DLC is one of the carbon coatings that are made in a vacuum chamber in a plasma. My DLC is low temperature (below 150C) coating (actually, this is growing amorphous crystal).
The process require some manipulation (rotation in 2 or 3 axial) in carbon plasma to provide identical coating to achieve certain characteristics.
This is not galvanic-like process where the position of items doesn't make sense.
Obviously, I can coat bracelets assembled, but it will not probably provide coatings in hidden areas.
If you want to satisfy your customers, the job has to be done properly.
To be profitable I have to load to a chamber 50-100 sets of watches and bracelets with a price of at least $5-8 dollars per watch and 10-15 per bracelet.
Think we could get 50-100 of the same watch together for a run? Are there sponsors who might be interested? I'm not sure what to do with the info, but for $20/watch, that seems amazing!
I may see if I can get 3-4 together to do a 'test run' though I do feel slightly duplicitous posing as a company rep right now. I don't want to mess with this guy's business, especially in times like these.
What are everyone's thoughts?