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1675 El Cornino build


sneed12

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 built a 1675 a while ago (http://www.rwgforum.net/topic/147952-cartel-1675-converted-to-low-beat/) but sold it when I needed some cash last winter. Since then I've had an itch for another, so I started the build process again a few months ago.
 
Begins with a stock cartel 1675:
 
100_4978_zps0167b303.jpg
 
100_4981_zps32b90f61.jpg
 
This rep has some great parts, but also some pretty bad flaws from the factory. Most of them have been discussed before. The biggest ones, to me, are the caseback, bezel, and case shape. This rep is built on the same case that 1680/5513 reps come from.
 
The case has too much meat on it, especially under the CGs
 
100_4980_zpsb532d1dd.jpg
 
The first thing I want to do is have the case reshaped. RolexAddict at RWG is well-known for his work reshaping cases, so I strip the watch down and send the midcase off to France.
 
100_4989_zps5b3e26d6.jpg
 
Next, I dig in the parts box until I find a caseback that is the correct shape. The only one I find that fits this case is from a 21j Daytona rep (incorrect 1680 "bubble" caseback on the right)
 
100_4987_zps8d7b5c8e.jpg
 
but some quick work with some sandpaper cleans off the engraving
 
100_4988_zpsf45e9e79.jpg
 
Now time to change the bezel. The rep comes with this bezel from the factory
 
100_4986_zps496a07d2.jpg
 
The shape is correct for a 1680 but all wrong for a 1675. I order a Clark's bezel with the correct profile
 
100_4984_zpsa783985b.jpg
 
the only annoying thing about it is that the whole thing comes bead blasted. It should have polished sides. I'll polish it later.
 
Time to swap out the clone ETA movement for a slow beat Swiss 2846
 
2662B842-A3AF-48AF-894E-D593AB9C82DC-159
 
0EE1B22C-92FE-4CFB-AB0A-55C136B47DE9-159
 
Need to take the GMT bits off the clone movement and put them on the Swiss
689453A5-79B2-4388-8332-E54E11991990-159
 
070E7EF2-E1E8-49CD-942A-FD1835AD32D9-159
 
and then it's time to wait for the case to come back from RolexAddict. Three weeks later, it's back. Here's the CG shape before
 
100_4992_zps511f6ec7.jpg
 
and after
 
BA5284A5-CFBD-43B9-9ECB-58E2B3C92EB5-159
 
The overall shaping of the CGs and is fantastic, but honestly I wasn't too happy with the finishing. As you can see from the pic, the polished surfaces look a bit wavy and there are still scratches and tool marks evident in the surface. The other side of the case looks the same way
 
F939EE36-9017-4DC1-A26D-810B93712DB4-159
 
So, I get out the polishing stuff and set about re-finishing the polished case surfaces.
 
89C224EB-9601-46E2-A10F-A1A5C086ED72-159
 
I go all the way back down to 320 grit:
ED1E82F6-3E6C-46E4-8C56-B9BF6EEAEFDD-159
 
on both sides and on the flat top part of the CGs
4C84BC69-32F1-4046-877E-28B48A9FB8E0-159
 
Up through 400, 600 grit
ED1E82F6-3E6C-46E4-8C56-B9BF6EEAEFDD-159
 
800 grit
F834E7F0-EEB3-4642-AA8C-C34AB67C2E72-159
 
I just cut a little piece of each successive grit, so it doesn't take much sandpaper to do a whole case
C82CE8E7-0564-488F-80FA-B9B5BFBA0F0A-159
 
and by the time I get through 1000, 1500, 2000 grit it's getting pretty shiny
18D55C66-93FA-477F-9DDC-2111CF1BCE4E-159
 
Hit it with the Dremel and some green jeweler's rouge for that mirror finish and we're done. Polished the bezel ring at the same time. Forgot to take a pic at this stage, but this is what the completed finish on the case and bezel ring looks like
C15C456C-C4D2-430A-9B00-AAE54B99F65D-159
 
but I'm jumping ahead. Movement installed
0B755542-3DAB-4E3C-AA55-48DB1706AE5D-159
 
Clark's T116 crystal fitted
0B17E208-80B7-4730-B868-4EF96628A6DC-159
 
and the first use of my new press that I won in the tutorial contest (thanks, Offshore!). Amazing how much nicer it is to work with a proper press.
C752BAAF-51F8-4F22-B84D-500ED560DABF-159
 
I decided to throw it on a jubilee for now and keep the rivet bracelet in reserve in case I get bored. Here's the completed watch
FB2098CD-BB00-46DA-8601-40B6E2AA666D-159
 
55705AFE-B73B-4698-8341-3AB3A7643126-159
 
A6BB7D7D-554F-4E9B-B3B0-B4056A89B87F-159
 
60390B46-79CB-4958-9106-E122370601CD-159
 
Very happy with the way it came out. Considered aging the bezel insert, but honestly now that it's all shiny and new-looking maybe I'll leave it the way it is for a while.
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congrats, nice work,

 

You are right, the only way to put off all tool marks is to use sandpaper before using the dremel with polishing compounds

 

really nice work...btw...where did you get that nice Jubilee from?? :)

 

Try Rafflestime, Ken shows sterile stuff, but send him a mail to ask the Rolex markings

Edited by Rolexaddict
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A little tip for all you polishers out there.

 

Try Micromesh abrasive cloth, you can get a selection pack on eBay going from 1500 grit through to 12000 grit it's brilliant stuff, waterproof & hard wearing. from 6000grit upwards you achieve a perfect mirror finish.

 

Not the cheapest but worth every penny!

 

P.S. What a excellent job you done there, in fact I rekon you could have done that case re shape yourself, no?

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congrats, nice work,

Thanks! Means a lot coming from you. The case shaping looks really, really good.

  I rekon you could have done that case re shape yourself, no?

No way. Look how even and consistent RA got the CGs. The points on each side are the same size, same angle... no way I could get it looking that good by hand. Finishing and shaping are two very different things.

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