Below is an Submersible Egiziano(EGI) with Angelus 240 cal Movement ...
Here the case ring is being cut on a mini lathe out of stainless steel (the EGI's I have seen didn't use brass)
A new set of thick lug bars have been made to scale...they were then threaded and the top surface has been rounded or shaped (machined) then a slot has been added, again by machine.
The leather strap no longer scuffs on the case. This is because the lug bars have been relocated so that the strap has room to move. Do NOT attempt to drill the lugs out by hand. The outside hole on the DSN case is a dummy it does not align with the inside hole. To get this correct the drilling has to hit both holes and move forward a touch at the same time...if you try to do this by hand you risk making a mess of the lugs.
First stage after aging....the case looks old and dull, this is fine and can stay this way...or.... it can also be polished as well....later I decided to polish the case but only in certain areas... [
The Polished version
The dial is now a full size 39mm dial instead of the 37mm DSN version. Also a new pearl has been made and fitted
The hands are original Angelus 240cal hands so is the lume, its left as found ie unmodified in anyway. The sub dial hands can be white or gold I decided on gold. Because of the heavy dial fading I decided on quite old looking indices to match.
The Angelus 240cal movement had been fully stripped, a few new parts have been added to replace any that were needed, the movement has also been cleaned and serviced then tested on a Time-grapher. The watch is accurate to around plus or minus 14 seconds a day as an average (its tested on its side, back and front and an average is taken). Also a new Display Case back has been specially made for this project, it would have been a shame to hide the 240 cal movement. The Case Back with Plexi has been made so that it is water tight.
I have made a plate to hide the alarm gears that have been removed and left a hole or two. Note: The EGI's didn't have CDG bridges so the plate I made doesn't need them. Therefore the CDG had to be removed from the original balance wheel bridge. This bridge was taken back to brass and then replated in nickel so that both bridges were a perfect match. The nickel plating wasnt easy as the electro plating cannot be allowed to touch the Angelus engraving, if it did then the Angelus logo would be difficult to see. I had to fill the Angelus engraving to protect it whilst it was plated so that after plating it remained gold.
A solid plexi has been made and added, however, the EGI is the only watch I would use a solid plexi on. This Plexi was made over sized and it had to be placed in a freezer for quite a while so that it would contract enough to fit, even then it was a little tight. Once it hit room temperature it expanded back to normal and is a water tight fit
The Crown guard seals are all in place, the stem tube will be soldered to case for a water tight seal
The back of the case (not shown) will be sealed internally once the watch is fully tested. The next stage is to have it pressure tested and take it underwater....