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How to modify ETA movement to take Rolex dials - without cutting the dial feets

HootschiGootschi

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Like most of you know, Rolex vintage dials for 15xx movements have feet positioned at 30/57min. which doesn’t fit to any ETA.
So how to can these been fitted together without cutting the Rolex dial feet (which make them worth less)? Let‘s see…

Putting dial & movement side by side shows that it’s not plug and play:
HlIn3D.jpeg


However:
- Yes, that’s doable!
&
- No, it’s not simple like cutting the feet and gluing a dial to a spacer.

Does that mean it’s complicated?

- drilling the mainplate of the ETA movement is involved.
(obviously a complete disassemble of the movement)

Plus there are differences between „Date“ or „No Date“ dials in the combo with the used ETA,
while in result a date version requires more things to be modified.

To use a Rolex dial with date window and with original dial feet on ETA
be aware that an origin ETA date-wheel doesn’t fit between the Rolex dial feet.
Therefore the ETA date-wheel need to be milled down in diameter and some additional work has to be done.
(I may showcase this at a later point)

Anyway
Here you see where an ETA needs new holes for the Rolex dial:
HlICLQ.jpeg

(You should have experience in disassembling and servicing of such ETA movements, incl. the right tool set.)

and here is „how I do this“:
- First I strip down the ETA to the mainplate, before I add it to my drilling holder:
HlI6Yk.jpeg


Here you can see how the plate is fixed in the holder:
HlIBiP.jpeg


Actually the drilling happens through the holder tool (from the opposite side):
HlIQCW.jpeg


After the drill the ETA plate has holes for Rolex dials:
HlIlGS.jpeg


Test fitting:
HlIqpE.jpeg


Rolex dial fit on ETA (there is no room for errors)
HlIoi2.jpeg

HlI8wo.jpeg


That’s it for now,
but i will continue this thread soon
 
Last edited:

Hec

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@HootschiGootschi

First of all thanks for the tutorial, I've been looking for something like this for a long time.

Next, I've been wanting a GMT master for a long time (it was the watch my father always had), and I like a Yuki dial.


As I read the recommended calibre is the 1575, what other movement would work? It's a future project, first fix my IWC!

Thank you!
 

krizzy

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@HootschiGootschi

First of all thanks for the tutorial, I've been looking for something like this for a long time.

Next, I've been wanting a GMT master for a long time (it was the watch my father always had), and I like a Yuki dial.


As I read the recommended calibre is the 1575, what other movement would work? It's a future project, first fix my IWC!

Thank you!
For 1675 , the low beat 2846 with gmt modification seems to be the most popular option
See example of mine here: https://forum.replica-watch.info/th...no-quick-set-date-ruby-vietnam-case.10953169/
 
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dpd3672

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Any chance you could provide the specs and measurements for your jig? Would like to modify a couple ETA movements to take gen Rolex dials, but if I can skip the tedious step of measuring and trial and error, I'd probably live a lot longer, lol.

Ideally, I'd like to 3D print a jig to hold the movement plate for drilling, but if I can have the specs, I can probably have a head start on doing it.
 

HootschiGootschi

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Any chance you could provide the specs and measurements for your jig? Would like to modify a couple ETA movements to take gen Rolex dials, but if I can skip the tedious step of measuring and trial and error, I'd probably live a lot longer, lol.

Ideally, I'd like to 3D print a jig to hold the movement plate for drilling, but if I can have the specs, I can probably have a head start on doing it.
Unfortunately I didn’t take measurements.
i build it on the fly using eta mainplates & Rolex dials for measuring

The main part of my tool (which is used as the drilling jig) made of steel & hardened afterwards.
outside ring is aluminum

However, 3D printing wouldn’t provide the stability I wanted.

if you use something different/ smoother material it will loose drill guidance in result
 

Plaasbaas

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Wow, how did I miss this thread, that is some awesome mod you did there. Great job!
 

HootschiGootschi

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Note:
In case you want to do this with a date dial, be aware of the fact, that there is much more work involved.

e.g. the ETA datewheel is to big in diameter to be able to spin between the Rolex dial feet.
(same is valid for DWO)

HMEf4D.jpeg

HMERyY.jpeg
 

HootschiGootschi

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To make this work you need to shape the ETA date wheel & your DWO down to a size that fits freely between the feets..
some work samples down below

Above is the diameter shaped date wheel, down the standard
HMNHmv.jpeg


how it normally looks mounted in the movement (normally it has numbers on it of course)
HMNj48.jpeg


how it looks with the shaped date wheel
HMNKP1.jpeg


how it looks with the shaped date wheel & DWO
HMNzgK.jpeg
 
Last edited:
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