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Understanding Guitar Setup
 

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Tools Tips and Tricks

Simple Tools For Nut and Saddle

Pre-test Measure Compensation Offsets

Locating Fret Buzz

Hollow Grind

String Spacing At The Nut

 

Simple Tools For Nut and Saddle

This topic is specifically directed at DIY-ers; luthiers know what they need and already have the tools.

Though professional tools can greatly improve your speed, and perhaps the resulting quality, they are by no means essential.  For instance, you would expect a professional luthier to have a good set of nut slot files, but that may be too expensive for an owner of one or two guitars.  You can do the job, if you are careful, with a set of mini needle files from a local hardware or a luthier supply.  keep in mind, though, that, in the case of the nut slot files, there is a huge difference in the ease and accuracy of the real thing vs the substitutes.

There is more than one way to do most setup processes, even among professionals, so use your imagination to find a good way to accomplish what you need to do.

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Pre-test Measure Compensation Offsets

Offset estimating toolWhile the offset length can be calculated, many would like a quick, easy way to get an estimate of offset length. (In either case, the final adjustment of the nut offset will need to be done with pitch measurements.)

Here is a simple tool that you can make!  With it, you can do a temporary string compensation, and then, somewhat accurately, measure the offset. It took me about 10 minutes to make this tool from a regular 2" paper clip!

To use it, find a gauge of the right thickness, that will allow you to slide the tool under a string, almost to the nut, putting just a tiny bit of upward pressure on the string. Then, using your strobe tuner or program, slide the tool to where the open string is in tune with the 2nd or 3rd fret. Then measure the distance from the nut to the approximate centerline of the tool wire. Since this is an estimate, add a little more length, so you won't come up short.

With this information, you can do most of your offset filing prior to installing the shelf nut on the guitar.

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LocatingFretBuzz

Buzz got you baffled? You can find which frets are buzzing with your volt-ohmmeter.   Set in resistance mode, connect one probe to the test string between the nut and the tuning machine.  Hold the other probe on the end of a suspect fret, and pick the string firmly.  The VOM will register Open Line for no buzz, less resistance for a bad buzz, and more resistance for a weak buzz.

My pocket-sized digital multimeter works really well for this, but here’s an inexpensive tool that’s a little more specialized, from Schrammguitars.Com.

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Hollow Grind

When making a partial shelf nut, I need to file back the nut a little for the stings that are already over-compensated.  In order to keep the top front of the nut as vertical as possible, rather than file a sloped surface, I use a small Dremel grinding stone to make a hollow grind.

You probably notice that my shelf nuts have a smoother, continuous appearance, especially compared to Delft's.  That's partly because the cut-backs don't show up well in the (not so sharp) photos.

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String Spacing at the Nut

If you are making a new nut, it's a good time to consider string spacing.  The most common recommendation for string spacing on steel-stringed guitars is equal distance between the strings. That would give you more distance, center to center, the thicker the strings.

I prefer to space the strings equal distance center-to-center.  This is a matter of personal preference, so I'll just give my reasons my preference.  

My theoretical reason is that the thickness of the strings doesn't matter; the fingers are reaching for a position where the center of the string will be.  (The thickness of the fingers might make a difference, though.)

My practical reason is that I like to cover two bass strings with one finger, such as an Em 022000 chord fretted by the first or second finger, leaving the third and forth fingers available to play notes on the higher strings.  I couldn't do that on a classic style guitar with equal distance between strings. 

I also like adequate space between the treble strings.  I would think that players with fat fingers would prefer equal center-to-center spacing.

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