Black polish was initiated.

Jul 11, 2019,09:56 AM
 

for  a very good mechanical reason in the very early days of horology and it was NOT because it looks pretty.


In the days when watches were not in sealed cases (because they had not yet been invented) and humidity and dampness were a potential problem eventually causing the steel to corrode or rust.
When steel is black polished the surface is dead flat with no pits or scratches for humidity to adhere to or be captured in and cause corission, black polishing makes it more difficult for moisture to wreak it's havoc upon steel.

Consider black polishing an early form of anti-corission resistance.

Naturally black polishing quickly became a sign of superior skill and craftsmanship and has been extensively used from the early 18th Century up to today.

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black polish definition?

 
 By: KLC8 : July 7th, 2019-16:49
when use black polish does it mean only on parts with steel material? when 18K gold case or 18k gold parts wants to have perfect finish can we say it is black polished? thanks

It's like a black hole, but for shininess.

 
 By: Spangles - Mr. Tabby : July 7th, 2019-18:51
So shiny that, at the right angle, not even light can escape and so it appears black.

Person of African descent

 
 By: dhendolan : July 8th, 2019-04:14
Living in Warsaw?

Good try, but no!

 
 By: cazalea : July 8th, 2019-09:16
I would describe it as Labor-intensive hand polishing of minor surfaces in the watch movement or dial. Cazalea

LOL 😆 [nt]

 
 By: ChristianDK : July 8th, 2019-20:51

Black polish was initiated.

 
 By: David Walter : July 11th, 2019-09:56
for a very good mechanical reason in the very early days of horology and it was NOT because it looks pretty. In the days when watches were not in sealed cases (because they had not yet been invented) and humidity and dampness were a potential problem even...