Internet Horology Club 185
Removing Stubborn Case Backs
November 07, 2010, 17:37
Roger J. NolfeRemoving Stubborn Case Backs
I had a particularly difficult case back to remove and John Duvall has a tutorial on removing them. Unfortunately this one would not budge so I had to try something else. I took 3 strips of 3M double sided VHB tape (which you can get at any automotive store
3m link here) and placed it on the back. Peeled off the red side to expose the second sticky layer and pushed it on a hard flat surface. Putting downward pressure on the outer edge of the case and twisting loosened it immediately with no residue left to clean up.
November 07, 2010, 18:21
Jerry KingThat is very helpful information, Roger....I'm sure that many of us has had to deal with stubborn screw covers, esp since sometimes they are cross threaded....
I normally use rubber surgical gloves, the disposable kind, when removing rear covers or front bezels manily so as not to leave oily hand or finger prints but in the process the rubber also gives one very good 'traction' to grab hold and move these sticky covers without too much effort....
Regards,
Jerry
November 07, 2010, 20:41
Larry LamphierIstarted out using this.
November 07, 2010, 20:41
Larry LamphierThen i found this.
November 07, 2010, 20:45
Larry LamphierThe smaller side, for the smaller watches.
Another thing I found that helps. If you think it may be loose case screws, turn the watch, crystal side down, give it a few light taps, to loosen and let the screws go away from the back cover, then try to turn it off.
It has worked for me a FEW times now.

Regards,
Larry
November 07, 2010, 21:32
Roger StephensLawrence,speaking of cross threded case backs,what can be done of these if anything. Regards Roger
November 08, 2010, 11:18
Bruce StewartI sometimes just grab a wad of Rodico. When "mushed" up against the back it usually provides enough grip to break things loose. When that doesn't work I go to a tape approach using 1/8" thick double stick tape.
November 08, 2010, 11:49
Jerry KingRoger sometimes the threads can be cleaned up and still work okay, however if they are real bad it may be necessary to recut the threads....
I send mine to Leon Harris who can take care of the problem for you....Here is his contact info.... HarrisLJ@msn.com or phone 931-261-0543....
Regards,
Jerry
November 08, 2010, 12:51
David AbbeMost of the time, when a watch case cover is cross threaded it is not too serious and you can see there is a "tight" side, and a gap around on the other side.
In such cases,(pun intended) I insert my case opener at a point in the irregular "gap" towards the "tigh spot" between the cover/bezel and the case body and gently lever it. Usually after a few tries at different "strategic (other) places" it will "pop" up
November 08, 2010, 12:52
Larry LamphierSometimes you might Think they are cross threaded, but when you look at them through a loop you may see that there is just one thread that is damaged. I have used a sharp tool, like a really dull knife, and actually staightened it out. Like jerry said, I also clean the threads really good. I have soaked the really dirty ones in lemon sescented Amonia, and then washed them with a tooth brush and hand soap. It is really amazing how much dirt can be in one of them!!

If that doesn't work, I just start Yelling LEON!!
Just like I yell ROGER!!! on my movements when I get into trouble!!

Regards,
Larry
November 08, 2010, 15:58
Eric UnseltI've had some luck with putting cases with overly-tight casebacks into the freezer for a time. The metal shrinks fractionally, allowing the mating surfaces to withdraw slightly.
November 08, 2010, 19:35
Roger StephensThanks everyone,I knew you guys would have some sound advice.I will try them.Thanks again Roger
November 28, 2010, 22:08
Edward KitnerI had a stuck bezel that I worked on for 2 days. I tried some of the methods I found on IHC185. Roger Nolfe's method was the only one that worked, and it took 3 tries.
Thanks Roger
