Iron & Bronze by Angular Momentum & Manu Propria

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September 2014

An Experimental Timepiece

Iron & Bronze Timepiece by Angular Momentum & Manu Propria

Five-body case, made of iron, the crown, the revolving bezel and the back and movement holder made of bronze.
The dial patinated brass with applied iron circle.
The hour indexes represented by iron spheres.
Brass hands with luminous oyster powder bound in reisin.
Natural rubber strap with Angular Momentum special locking system.
Historical hand-winding movement Fontainemelon, Caliber FHF 96

Iron & Bronze by Angular Momentum & Manu Propria

Iron treatment
The iron parts have been milled and turned out of solid iron.
After the iron parts have been adjusted and finished, they were rusted with a special solution made of vinegar, salt and Hydrogen peroxide.
Finally the rust particles were removed by Hydrochloric acid.
The structure of the rust layer remained and was preserved by a durable PVD coating.

Limited to 10 pieces

Source: Angular Momentum & Manu Propria