vianney
20
let me bring my own answer.
Feb 03, 2013,13:21 PM
Yes, indeed, service or repair to be done in the future is an issue to be considered when purchasing a watch (and not only from independent watchmakers ! ).
As having been restoring antique timepieces for several years, I have integrated this in my creations.
That is the reason why I do not use "innovative" materials such as silicium or carbon fiber : these are recent technologies and they could be obsolete within 15 or 20 years. To make a silicium escape wheel or balance spring one needs industrial facilities similar to those of the chip industry. If you can make one you can make thousands of it for a very cheap price.
However, if this technology becomes obsolete and its production facilities disappear, no one will be able to make one for spare.
Think just for a while about the Pulsar watch from Hamilton, launched in April 1972. It is only 41 years from now but nobody is able to repair it when the electronic circuit is dead. One can only change the latter, if available !
On the other hand, even in 100 years from now, any experienced watchmaker will be able to make a brass wheel or a steel balance spring, provided the art of watchmaking is still perpetuated !
The same as I used to do as a restorer on pieces that were up to 500 year old.
For that purpose, I design my watches so that they can be serviced, repaired or restored long after I passed away ( ;-)  
by a skilled watchmaker of the future, alone in his workshop.
This is also the piece of independence that you purchase when purchasing from an independent watchmaker (at least from the real ones ;-) !  
.
Because we are in the watch making, not in the watch business.
Cheers.