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Removing a stubborn slotted case-back. Any ideas ?

June 28 2012 at 5:01 PM
Paul  (Login GMTKiwi)
VRF Member
from IP address 222.154.183.169


I'm trying to liberate a perfectly functioning Valjoux 72 from it's horrible old (no-value) case but the slotted caseback simply won't budge.

None of my case opening tools have worked. Penetrating oil hasn't helped - nor has a hairdryer or a night in the deep-freeze - all suggested by an engineer friend.

Two (real) watchmakers have also tried and failed, even when resorting to punch and hammer (with my permission).


Any other tricks of the trade would be really welcome - thanks in advance.

 
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jatucka (rob)
(Login jatucka)
VRF Director
79.6.129.108

if the case has no value try to (very carefully) cut the case ... (nt)

June 28 2012, 5:12 PM 


 
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Tom
(Login TurboWatch)
VRF Member
76.114.59.58

No need to cut the case

June 28 2012, 5:24 PM 

carefully tab 2 indentations that is deep enough, one on each opposite side of the case back. Then use 2 metal screws on each one of them. Use those as leverage to turn the case back loose. Easy fix if you want to reuse the case back. Good luck

 
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watchyouwant
(Login watchyouwant)
VRF Member
122.111.217.129

and warm up the back before you open.....

June 28 2012, 7:14 PM 

makes it easier in case you have a desintegrated seal as well.....good luck ! achim

 
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Paul
(Login GMTKiwi)
VRF Member
222.154.183.169

Thanks for the tips guys. Appreciated (nt)

June 29 2012, 3:32 AM 



    
This message has been edited by GMTKiwi from IP address 222.154.183.169 on Jun 29, 2012 3:57 AM


 
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janice maturo
(Login janiceandfred)
VRF Member
112.211.182.77

our watch maker's method...never fails

June 30 2012, 12:05 AM 

this is the method my well seasoned Godfather the watch maker uses and it never fails, and never damages a caseback. he utilizes this on most stubborn and soft gold cased rolexes and was trained by rolex manila decades ago to use this method so as to minimize any chance of damage. it also works equally well on any steel cased watch.

use 2-part epoxy and affix a suitable tool bit to the caseback. use a tool on the tool bit to unscrew the caseback while the watch case is held in a suitable holder with wood or plastic insulators. after the caseback is removed, simply soak the caseback and epoxied tool bit in solvent to dissolve the epoxy.

hope this tip can help some here who are afraid of damaging a valuable case and caseback.

janice happy.gif

 
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Ara
(Login daydatemonthchrono)
VRF Member
77.42.230.236

Re: Removing a stubborn slotted case-back. Any ideas ?

June 30 2012, 2:26 PM 

Hi Paul, try putting a pocket knife in the slot ,and have someone hit on the knife with a hammer while you try to open the case at the same time the knife is hit with the hammer.

Thanks

Ara

 
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Paul
(Login GMTKiwi)
VRF Member
219.88.217.45

Thanks Janice and Ara - both idea are worth a go !

July 2 2012, 8:23 PM 


 
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