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navi b lug holes 
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Post navi b lug holes
hello, I finish my navi b watch with a hamilton 4992b. the movement gives me a lot of headache and after 10 month now is running very well. yesterday I want to wear it the first time. after 10 min on the wrist the strap went of and the watch felt on the floor [FACE SCREAMING IN FEAR]. I was chocked but the time was beating me so I choose another watch and later as I come home I look what realy happened to the movement. by luck it was still running so I controlled everything well and it looks like all the jewels are ok and everything is still working well also on the timegrapher it runs still the same in all positions. only what damage is the crown and the steam as the watch bumt on the crown. now I look well to the case why the springbar went out and I realize that one hole isn’t drilled deep inside and don’t hold the springbar. Image
the problem was detected but now can I get the hole deeper? Is anyone has a suggestion for it?


Mon Apr 02, 2018 2:05 am
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Post Re: navi b lug holes
Sorry to hear that, im making similar proje, but my watcmaker closed the case wrong and its stuck.. empty case

Whats the sourse of the case ? manufacture

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Mon Apr 02, 2018 2:14 am
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Post Re: navi b lug holes
its an athaya case I already mailed him but never got a reply




quote="vesire"]Sorry to hear that, im making similar proje, but my watcmaker closed the case wrong and its stuck.. empty case

Whats the sourse of the case ? manufacture[/quote]


Mon Apr 02, 2018 2:19 am
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Post Re: navi b lug holes
to fix that you need a really long drill bit, at least that's how it was made in the factory.
those are hard to find, but try ebay, and get a pin vice so you can control the bit, if you use an electric drill
be very careful.


Mon Apr 02, 2018 4:46 am
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Post Re: navi b lug holes
I always though the factories use a 90 degree drill for the spring bar holes. Like a dentists drill.

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Mon Apr 02, 2018 5:16 am
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Post Re: navi b lug holes
I dont know I think I dont have the right tools for this



quote="neckyzips"]to fix that you need a really long drill bit, at least that's how it was made in the factory.
those are hard to find, but try ebay, and get a pin vice so you can control the bit, if you use an electric drill
be very careful.[/quote]


Mon Apr 02, 2018 5:55 am
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Post Re: navi b lug holes
that how I thought self....maybe I ask my dentis for help [SMILING FACE WITH OPEN MOUTH AND COLD SWEAT]




quote="straps68"]I always though the factories use a 90 degree drill for the spring bar holes. Like a dentists drill.[/quote]


Mon Apr 02, 2018 5:57 am
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Post navi b lug holes
anybody has an idea???
I realy dont find a way. the only I have is to drill a hole throu every lug but realy that is not what I want.


Mon Apr 02, 2018 10:04 am
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Post Re: navi b lug holes
It my sound weird, but asking your dentist is probably not such a bad idea. At least he has the gear to work in such a confined space at a 90 degree angle. And his drill bits are even made to deal with ceramics. Honestly, I would give it a try. :thumbup:

...but be polite and think of your next session with him :P

tafari wrote:
that how I thought self....maybe I ask my dentis for help [SMILING FACE WITH OPEN MOUTH AND COLD SWEAT]




quote="straps68"]I always though the factories use a 90 degree drill for the spring bar holes. Like a dentists drill.
[/quote]


Mon Apr 02, 2018 10:34 am
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Post Re: navi b lug holes
for now this is the best idea .I look for a dentist driller but them are costly .I will wait what Adrian say about it




quote="hako"]It my sound weird, but asking your dentist is probably not such a bad idea. At least he has the gear to work in such a confined space at a 90 degree angle. And his drill bits are even made to deal with ceramics. Honestly, I would give it a try. :thumbup:

...but be polite and think of your next session with him :P

tafari wrote:
that how I thought self....maybe I ask my dentis for help [SMILING FACE WITH OPEN MOUTH AND COLD SWEAT]




quote="straps68"]I always though the factories use a 90 degree drill for the spring bar holes. Like a dentists drill.
[/quote][/quote]


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Mon Apr 02, 2018 10:55 am
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Post Re: navi b lug holes
Did you made double check of hole?Мaybe something stuck inside the hole?
That bottom left lug seems slightly bent to the left, compared to others, looking at the picture?
Idea:
if you have enough nerves and patience, you can make hole deeper by simple electrolytic etching with salt water, just be sure to protect all other surfaces well, with some lacquer or similar, leaving only a hole for etching... Seems like much less pain than drilling and visiting dentist :)
Also, you can try that first on some piece of metal and get some practice...

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Mon Apr 02, 2018 2:50 pm
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Post Re: navi b lug holes
or you could just do this...
Image
image stolen from watchuseek.... thanks guys!

http://forums.watchuseek.com/f6/drilling-lugs-blind-holes-how-2515386-2.html


Mon Apr 02, 2018 3:51 pm
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Post Re: navi b lug holes
I check it well the left hole like like a small hole in the middle but than the other hole isn’t deep
left side
Image
right side
Image

with soldwater it will be a long process I guess



quote="djolemag"]Did you made double check of hole?Мaybe something stuck inside the hole?
That bottom left lug seems slightly bent to the left, compared to others, looking at the picture?
Idea:
if you have enough nerves and patience, you can make hole deeper by simple electrolytic etching with salt water, just be sure to protect all other surfaces well, with some lacquer or similar, leaving only a hole for etching... Seems like much less pain than drilling and visiting dentist :)
Also, you can try that first on some piece of metal and get some practice...[/quote]


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Mon Apr 02, 2018 4:10 pm
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Post Re: navi b lug holes
maybee it can work I will look for a drill bit. only Im afraid that the hole will not straight inside



quote="neckyzips"]or you could just do this...
Image
image stolen from watchuseek.... thanks guys!

http://forums.watchuseek.com/f6/drilling-lugs-blind-holes-how-2515386-2.html[/quote]


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Mon Apr 02, 2018 4:15 pm
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Post Re: navi b lug holes
tafari wrote:
maybee it can work I will look for a drill bit. only Im afraid that the hole will not straight inside



neckyzips wrote:
or you could just do this...
Image
image stolen from watchuseek.... thanks guys!

http://forums.watchuseek.com/f6/drilling-lugs-blind-holes-how-2515386-2.html



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Although it seems strange this is what many well known brands do to get the holes done.

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Mon Apr 02, 2018 4:31 pm
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Post Re: navi b lug holes
I will give it a try tomorrow I will check for a drill bit long in micro size [SMILING FACE WITH OPEN MOUTH]




quote="emilio666"]
tafari wrote:
maybee it can work I will look for a drill bit. only Im afraid that the hole will not straight inside



neckyzips wrote:
or you could just do this...
Image
image stolen from watchuseek.... thanks guys!

http://forums.watchuseek.com/f6/drilling-lugs-blind-holes-how-2515386-2.html



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Although it seems strange this is what many well known brands do to get the holes done.[/quote]


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Mon Apr 02, 2018 4:39 pm
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Post Re: navi b lug holes
Image

It seems to have a metal ring inside the hole. Try to remove it.

Try to put right the lug. It seems to be bent.


Mon Apr 02, 2018 11:27 pm
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Post Re: navi b lug holes
It looks like old pin of springbar is stuck inside the lug.... try to get it out of there...
BTW, etching is not so long process... I remember I had similar problem with tiny screw holding hairspring stud, it was broken in balance bridge... Only way to remove it from there was electrolysis and it took only 10-20 seconds.... with high amperes , like 30V 5A :D

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Tue Apr 03, 2018 12:38 am
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Post Re: navi b lug holes
there is a small hole inside but not big enough for the spring bar.I already try to with a needle



quote="EP"]Image

It seems to have a metal ring inside the hole. Try to remove it.

Try to put right the lug. It seems to be bent.[/quote]


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Tue Apr 03, 2018 1:37 am
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Post Re: navi b lug holes
thanks to all I solved the problem. I use the method neckyzips advice and it work pretty good. thanks again to all members for help [WHITE SMILING FACE]️


Tue Apr 03, 2018 3:15 am
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