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Have you ever found yourself in this situation? You set the tone of your guitar or bass perfectly. Your tuner reads exactly the same step for the harmonic on the twelfth fret and the fretted note at the twelfth, but some still frets produce notes that are out of tune. The previous article discussed Xylem intonation and how to set it correctly for guitars and basses. This two-part article will address the problems of intonation and their different solutions. After have completed any of the adjustments below, you should go back to chant his instrument. While reading, keep in mind that the instruments sing perfectly to each fret are very rare and you should expect slight variations in pitch perfect. However, you should be able to correct the variations above about 6 cents sharp or flat in most cases.
Please follow this link to view figures for this article.
Bad Tuners, Low Battery and Old Strings
When checking the intonation an instrument, make sure to use a decent quality chromatic tuner with new batteries. The tone may seem out simply because a cheap tuner, or one with a good battery low, produces inaccurate readings. Another cheap fix potential for bad intonation is a replacement string. The guitar strings down and get old, become corroded, develop wells and dings, and the nuclei stretch more easily, which can affect the intonation.
Excessive Relief
Regent tuner faulty or sequences of age, the next thing to check is the relief neck. If intonation of the instrument is properly defined at the 12th fret, but it is incorrect in some other junk (especially those in the middle of fretboard), it can have much relief. Overemphasizing requires strings to travel further contact with the frets, which makes the strings stretch more and Results in a slightly sharp. To correct this problem, optimize the relief of his instrument (see the articles Xylem truss rod, parts one to three detailed procedures for the optimization of support).
Nut and Saddle Slots
In a nut well done, the tracks are angle down to the head and as a result, the string contacts the nut on a single point in the slot closest to the fretboard (Figures 1 and 2). If the nut slots have more than one point of contact, or point of contact is further fretboard, intonation can be thrown away. If the nut slots of the instrument are cut in such an angle, and / or the highest points of the slots are not right in the face of the fretboard brown, the grooves of the nut may need to be filed. You will need a set of measure-nut slotting files that your string instrument gauges for the file correctly slots (these can be purchased from companies luthier supply to try to get the files that are about .003 "larger than the string gauge). file away material in small increments, making sure the depth of the grooves do not exceed ½ to ¾ the diameter of the rope. If the tracks are already too deep to allow additional deposit, you may need install a new nut. Since the fretboard faces of the slots are higher than the rest, you will have corrected the problem. If you are not comfortable filing nut even most repair technicians and luthiers (including me) charge between $ 20 - $ 50 for the modifications of the nut.
A similar procedure can be done to the slotted saddles on some instruments. Extra caution should be used when submitting these saddles, they may not be as easily replaced as the nut. Saddles consisting of a single point (such as those found on most guitars) should not be presented this way. In Moreover, the strings are pressed down into the slots with the saddle nail to ensure that the strings are in contact with the tip of the slot.
The second part This article will discuss how to modify a nut that is too high for proper intonation and some simple and inexpensive ways to improve the intonation of an instrument with saddles saddles fixed or mobile, which are set all the way back or forward. Thanks for reading, see you next month!
Copyright © Anthony Olinger, Xylem Handmade basses and guitars in 2008.
About the Author:
Anthony is a professional luthier specializing in making and repairing handmade electric basses and guitars. He owns and operates Xylem Handmade Basses and Guitars. You can visit Xylem on the web at http://www.xylembassguitar.com and contact Anthony via email at: anthony@xylembassguitar.com.
Article Source: ArticlesBase.com - Guitar and Bass Repair: Perfect the Tuning of Your Instrument - Intonation Troubleshooting Part 1
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