What Causes Bracelet stretch

Discussion in 'General Watch Discussion' started by SC-Texas, Mar 18, 2018.

  1. SC-Texas

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    What causes bracelet stretch? He generally see this in reference to Rolexes, but I also see it in my vintage Seiko and citizen bracelets. To loose? Too tight? Too dirty? What causes the stretch?

    Simoly stated: Dirt + movement = wear -> stretch

    too loose creates more movement than too tight.

    Too much dirt and grime couoled with a loosely fitting bracelet makes the problem of "stretch" appear very quickly.

    Even bracelets that are cleaned on a regular basis still have dirt and debris that builds up quickly. If the bracelet is loose it exacerbates the problem while too tight causes the watch to not flop around the wrist and let the dirt do the damage.

    The torque exerted on the pins grinds against the links. When combined with any grit that gets into the parts you get abrasion that wears away metal on the softer part - namely the pins...

    A good observation regarding the term stretch. "Stretch" does not literally mean stretching the metal. It means that the bracelet is so worn that it's overall length is "stretched" because of the much looser tolerances.

    The grit and wear (from a dirty bracelet), and the hammering forces that a loose bracelet sees, will increase this wear between the links - the bracelet will be able to be stretched out longer than when it was new and tigWhat causes bracelet stretch? He generally see this in reference to Rolexes, but I also see it in my vintage Seiko and citizen bracelets. To loose? Too tight? Too dirty? What causes the stretch?

    Simoly stated: Dirt + movement = Increased tolerances between individual parts = wear -> stretch

    too loose creates more movement than too tight.

    Too much dirt and grime couoled with a loosely fitting bracelt makes the problem of "stretch" appear very quickly.

    Even bracelets that are cleaned on a regular basis still have dirt and debris that builds up quickly. If the bracelet is loose it exacerbates the problem while too tight causes the watch to not flop around the wrist and let the dirt do the damage.

    The torque exerted on the pins grinds against the links. When combined with any grit that gets into the parts you get abrasion that wears away metal on the softer part - namely the pins...

    A good observation regarding the term stretch. "Stretch" does not literally mean stretching the metal. It means that the bracelet is so worn that it's overall length is "stretched" because of the much looser tolerances.

    The grit and wear from the dirt in bracelet, and the flopping forces that a loose bracelet sees, will increase this wear between the links. Increased wear result in excessive tolerances between the parts and the bracelet will be able to be "stretched" out longer than when it was new and tight.


    This article has been around awhile, but an interesting read.

    http://www.clockmaker.com.au/watchmaker/wornbracelet.html

    Sent from my SM-N920V using Tapatalk
     

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