Musical Instrument String Anchor bridge pin replacement
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How Does QuickString Work?

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A question we are often asked is “How does QuickString work?”  Great question!  The simple answer is “quite well”.  But seriously, here is an explanation of how it actually functions.

All of our variants of QuickString function as a guide for your strings.  The builders of many fine guitars provide a little notch (or slot, if you will) in the bridge plate and bridge, such that you may remove the bridge pins after string installation, and they will stay attached quite well.  The tension of the string is supported by the ball end of the string being pulled up against the bottom side of the bridge plate and soundboard (top) of the guitar, requiring no bridge pins to hold them in.  The bridge pins are simply used to initially insert the string into the notch and hold it there until the string tension pulls it against the bridge plate when brought up to pitch.  The break angle of the string over the bridge saddle and into the string (bridge pin) hole is a critical component to both string mounting and the tone of your guitar.  You will see many acoustic guitars with small ramps at the leading edge of the bridge pin string hole to fine tune this break angle.  In reality, the soundboard is sandwiched between the bridge plate and bridge, thus providing a bridge plate/soundboard/bridge assembly.  In essence, the strings are wrapped around this assembly.  This positive connection and high tension on the soundboard are what makes the soundboard vibrate with the movement of the strings when played.  The better the tension and connection, the better the soundboard will react to the movement of the strings.  Our testing has found the break angle and wrap around path to be far more critical to the tone of the instrument than the type of material used for either bridge pins or QuickString.  This is why a well made instrument equipped with a bridge using bridge pins is so responsive and sounds so good.

In an instrument without the notches, the bridge pins must also bear some of this tension to hold the string in place, even though much of the tension is still taken by the bridge plate and top.  This means that some of the string vibration is going to be absorbed by the bridge pins rather than direct movement of the soundboard.  This is especially the case with ill fitting bridge pins where the taper of the bridge pin hole and the taper of the bridge pin are mismatched.  This mismatch is what causes some bridge pins to either fit too tight at some point along the taper, or not tight enough.  We’ve all seen this where bridge pins are either very difficult to remove, or very difficult to get to stay in.

On the other hand, a pinless bridge instrument is very convenient for making string changes.  And there are some fantastic sounding pinless bridge instruments available these days.

QuickString works very much the same way as a bridge with notches, except that there is no need to use bridge pins to insert and hold the strings until they are under tension.  Very little tension is actually supported by the QuickString, as most of it is held by the bridge plate and soundboard.   The slots in the QuickString are there to orient the string in the proper position against the bridge plate, and are cut past the bend in the bracket to actually facilitate wrapping the string around the bridge plate/bridge assembly.  The Anchor Bracket design mounts tightly to the bridge plate using a common adhesive and four tiny barbs to prevent creeping upon initial installation, so as to be part of the bridge plate and facilitate the most vibration to the soundboard.  In fact, the Anchor Bracket design could actually be used as a bridge plate itself, if implemented properly into the structural design of the instrument.  This is why it may also be used as a repair for a worn bridge plate if desired.  In our OEM designs, the string is in direct contact with the bridge plate, with the wrap around path in use as well.  In all cases, QuickString becomes part of the bridge assembly rather than an ill fitting part.  In either case, a maximum amount of string tension is transferred directly to the soundboard.

We have conducted thousands of hours of durability testing with our QuickString devices, using standard and non-standard tunings, and hundreds of string changes without a single failure.  The Anchor Bracket has never come lose, moved or shifted during this testing, even though no fasteners were used for permanent mounting.

Some engineers have pointed out to us that our design relieves the pressure put on the bridge by bridge pins as well.  The benefit of faster, easier string changes without the use of any tools for removal of bridge pins is nice too, which is where it all started.

While QuickString is not for everyone, we have had numerous artists test QuickString, and they will no longer use bridge pins in their guitars.  They totally believe that we’ve combined the best of both worlds.  A device that offers the sonic benefits of a bridge using bridge pins and the convenience of a pinless bridge designs.  They state that they change their strings more often now to keep them fresh.

And you can still use your bridge pins with QuickString if you like.

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