jmb Posted May 31, 2014 Report Share Posted May 31, 2014 One thing I've noticed between rep and gen cases is the "smoothness" when screwing the case-back onto the case. The case-back on Gen cases I've dealt with (maybe because they are old) usually feel as smooth as silk when screwing down while a lot of (most) feel a bit rough. I know, you can't see it and nobody is going to call you out for it but if you occasionally get into your case you would probably appreciate smooth threads. I grabbed a DJ case, screwed a back on it and it felt just a bit rough (screwed down fine) so I removed it, painted on some very fine polishing compound (S100 I got from a MC dealer) and screwed the case on and off many times. What this does is lap the case-back threads to the internal case threads and removes microscopic "high spots" which result in the rough feeling. After lapping I scrubbed the case and back thoroughly and now the case-back screws down with an almost Gen like feel. I feel better now... Quote Link to comment Share on other sites More sharing options...
dbane883 Posted May 31, 2014 Report Share Posted May 31, 2014 The same goes for most cases that accept gen movements. Quote Link to comment Share on other sites More sharing options...
jmb Posted May 31, 2014 Author Report Share Posted May 31, 2014 Those being "reproduction" replacement cases? Quote Link to comment Share on other sites More sharing options...
alligoat Posted June 1, 2014 Report Share Posted June 1, 2014 Interesting mod- fine tuning the caseback assembly. Don't know if Rolex does something like this in preparing their watch cases or if their machining process is just more precise than the rep mfrs. Quote Link to comment Share on other sites More sharing options...
dbane883 Posted June 1, 2014 Report Share Posted June 1, 2014 Those being "reproduction" replacement cases? Phong, Yuki, HH..... Gen movements do not smoothly fit when "spinning" them into place. Usually the fit is very very tight compared to gen. The milling of the grooves is usually quite poor. An exception might be the 3035 and 3135 cases from Star T1M3. Quote Link to comment Share on other sites More sharing options...
kbh Posted June 1, 2014 Report Share Posted June 1, 2014 JMB, you've got way to much time on your hands. Quote Link to comment Share on other sites More sharing options...
jmb Posted June 2, 2014 Author Report Share Posted June 2, 2014 Now that I'm "employment challenged" I've had more time to think about things like this! Quote Link to comment Share on other sites More sharing options...
blue. Posted June 3, 2014 Report Share Posted June 3, 2014 J, hope you have not forgotten the option to thin out the lugs on the DJ 16200 cases, as close as possible to gen 1016 case specification Quote Link to comment Share on other sites More sharing options...
live1 Posted June 3, 2014 Report Share Posted June 3, 2014 well if we are being picky.i want to grind the noob v3 sel edge and lug inside edge super sharp,and even up the rest Quote Link to comment Share on other sites More sharing options...
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