Longines 13ZN Custom Watch Project: Hand Finishing

jolyon · Apr 29, 2026

I’m making a custom one-off haute holorogy project based off a Longines 13ZN movement. If this appeals to your tastes, let me know. If there is enough interest I can post regular updates.

In today’s entry, we can see the first stage in preparing the brass components. Anglage is completed by hand and the top surfaces are finished in matte using fine sand on a glass surface. This process was chosen over grainage due to the rubies needing to remain in place. Wide, deep dishes have been polished out around the rubies to illuminate the stones.

Archer · Apr 29, 2026

jolyon
This process was chosen over grainage due to the rubies needing to remain in place.

Nice - can you show photos of the process?

jolyon · Apr 30, 2026

Archer
Nice - can you show photos of the process?

If there is enough interest I would love to!
My first question is - do you think I posted this in the right board or would this be better suited in ‘Watchmaking’?

JimInOz · Apr 30, 2026

jolyon
If there is enough interest I would love to!
My first question is - do you think I posted this in the right board or would this be better suited in ‘Watchmaking’?

I think so.
Keep us updated.

jolyon · Apr 30, 2026

JimInOz
I think so.
Keep us updated.

I just requested the mods to move this to ‘Watchmaking’ - let’s see if they can do it 🙂

JimInOz · Apr 30, 2026

jolyon
I just requested the mods to move this to ‘Watchmaking’ - let’s see if they can do it 🙂

I did it yesterday, so all done and waiting for updates 😉.

jolyon · Aug 21, 2026

Preparation work underway on the Chrono Bridge. The geometry is being evened out and prepared for wide angles. You can see in the before images, the shape around the jewels was not symmetrical but now shows a more consistent profile

Ron_W · Aug 21, 2026

Impressive undertaking !

Wahoo98 · Aug 21, 2026

Agreed. Very cool. Look forward to further updates.