Guest avitt Posted March 21, 2009 Report Posted March 21, 2009 I've been providing DLC service on a word-of-mouth basis for some time now. Most of the time, everything works out perfectly - but every once in a while, there's a snag... Yesterday, I received a shipment of two cases, and several small parts. All of the part looked good at first glance, but when inspecting more closely, I noticed a small imperfection around the bezel of one of the cases. Thinking that it could be some oil or something, I wiped the area down with alcohol on a cotton swab. When I did this, the DLC coating actually lifted in the area: I immediately suspect what happened... Normally, I remove the bezels from all watches, and coat them separately. With this case, the owner had attempted to remove the bezel, and it wouldn't budge. When I received it, I also tried, without any luck. We determined that the bezel was probably press-fit metal. Not wanting to damage the case, we decided to leave it in place for coating. Looking at the coating defects, I am certain that there was a gasket left in place inadvertently. PVD coating is done at a very high temperature. (DLC is applied at slightly lower temperature than most other coating, but the parts are still heated to around 350-400
Mickey Padge Posted March 21, 2009 Report Posted March 21, 2009 Hehe, crazy stuff, but I am glad you fixed it and can re-coat the case
rolli Posted March 21, 2009 Report Posted March 21, 2009 with my pvd coating company i had never this problem. requirement is, all parts are separate and disassembled. my company has a lot of experiences with pvd / dlc coatings for watches. rolli
Guest avitt Posted March 21, 2009 Report Posted March 21, 2009 requirement is, all parts are separate and disassembled. That is the problem, Rolli. As you know, some cases are press fit with a mechanical press, and are not intended to be disassembled (just like press fit crown tubes, which are left in place for coating). Because this bezel was so difficult to remove, I made the mistake of assuming that it could not be removed. ...It had nothing to do with the PVD company...Mine is excellent too!!! Here are the parts that weren't damaged
Mickey Padge Posted March 21, 2009 Report Posted March 21, 2009 Great work right there, undeniable in black and white
Guest avitt Posted March 30, 2009 Report Posted March 30, 2009 The patient is on the road to recovery... The defective DLC has been stripped, and the case is ready for a new coat... ...This time, perfection is guaranteed!
mwee Posted March 30, 2009 Report Posted March 30, 2009 it looks really nice! Can't wait to get my BR01-92 DLC coated by you!
Guest avitt Posted April 18, 2009 Report Posted April 18, 2009 OK...The problem is solved! Bad coating has been stripped, and a new, perfect coating applied: ...like it never happened
bluerex Posted April 18, 2009 Report Posted April 18, 2009 OK...The problem is solved! Bad coating has been stripped, and a new, perfect coating applied: ...like it never happened Looking good. Great job.
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