IL020 Jumping Hour Model / Now accepting orders

I have started to take orders of IL020. 

If you have interested in this model, please feel free to contact.

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Original designed handmade stainless steel case

Case size : 41 x 49 x 11mm
Band width : 22mm
Movement : Swiss Fontainemelon (FHF) cal.98, Handwinding + Orginal Handmade Jumping Hour Module
Glasses :Sapphire
Black croco grained calf  leather strap
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The specifications are subject to change without notice.

PRICE:3,300USD + worldwide shipping cost 35USD

Build To Order (It will take 3-4 months until delivery.)

At first I ask 1,000USD as a deposit. Cancellation within one week from order acceptance, the deposit will be full refund. After completion of production, I request the balance and shipping cost.

Assembling, and completed !

This watch-making project will be finished at last. All parts has been produced.
FHF98 hand-winding movement is overhauled.

Assemble jumping-hour module parts.

Attentively adjust tension of jumper springs. In too weak or too strong, it does not work correctly.

Inner holder with movement is fixed with two screws.

Two clear plate (only 0.5mm thick acrylic plate) are screwed to the inner holder.

They don't disappear pretty perlage pattern.

Only the side of the lug is made with mat finish and the other surface is hairlined. They will be fixed to the main case with M1.6 micro screws (their head is cut and chamfered).

All parts are assembled !

Case parts making Pt.8 / Perlage

Perlage is one of the most popular decoration for watch movement. It is a very simple circular pattern by grinding. I applied it on the brass inner holder and on visible part of the base plate of movement.

Case parts making Pt.7 / Crown

The time of making crown parts has come at last. Already outer shape has been prepared on the lathe.

This crown has nine grooves. When I produced a trial model, I cut them with a starting drill. However, I use a Φ1.6mm ultra-hard rotary bar this time.

This tool is very useful. It facilitates cutting with small resistance.

To a lathe again. Chamfered and hiarlined.

These two parts will be combined later.

Case parts making Pt.6

I thought that this stepped case needs some eye-catching on its bezel. So I decided to put six rivets on it. Thanks to them the wide bezel doesn't look boring, I believe.

Making the seats which the rivets fit into.

It is an important point that the hole diameter cuts into the slant of the bezel.

Next, make the rivets from stainless rod. Rounding off their heads by handmade forming tool.

Polished heads and completed. Diameter is a little less than 2.0mm.

I made the crown tube too.

Case parts making Pt.5

Forming six screw holes on the main case with M1.4 point tap. After making prepared hole, I turned the tap slowly by hand to form a screw thread.

After a few hours, six threads to fix the caseback were finished.

Case parts making Pt.4

Today I finished the caseback. Its total thickness is 2.20mm.
Φ34.30mm ,0.8mm thick flat sapphire crystal will be fitted.
At first I cut the beveled step of circumference on the lathe.

On the milling machine, I opened 6 holes for M1.4 micro screws. And Φ2.0 countersink for screw head. The angles between the holes are 36 and 72 degrees.
Because there is just a step, I had to cut slowly.

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The caseback was completed well.