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  #1  
Old 08-24-2016, 10:21 AM
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kkrell kkrell is offline
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Default How to measure a neck

I like the neck on my current decades-old acoustic. How do I determine the shape, measure the profile and radius to compare when shopping for another guitar? Would like to narrow the field of what I consider, or have a spec if I requested something custom.

As simple as this (although the resource links don't work for profile pics and radius guide)?
http://www.crookcustomguitars.com/20...a-guitar-neck/
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Old 08-24-2016, 10:29 AM
terrapin terrapin is offline
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You CAN take a length of solder, wrap it around the neck and then trace the resulting contour onto paper which can be made into a template to use for comparison purposes. This quite often works better than numbers, as those are not always easily available and the labels used (I.e., shallow C, modified V) can vary greatly from maker to maker.

Last edited by terrapin; 08-24-2016 at 10:36 AM.
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Old 08-24-2016, 10:43 AM
TConnelly TConnelly is offline
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Sounds like what you want is a contour gauge like this one from Harbor freight. You should be able to transfer that to heavy card stock and take it with you.

Cheers...................Todd
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Old 08-24-2016, 10:45 AM
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kkrell kkrell is offline
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Terrapin, thanks. OK, that, or something similar to hold the shape, makes sense. And I could measure at different frets to get a sense of changes along the length of the neck.
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Old 08-24-2016, 10:53 AM
cmd612 cmd612 is offline
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Default for fretboard radius

There are printable radius gauges online. Here's one:

http://handmademusicclubhouse.com/gr...etboard-radius
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Old 08-24-2016, 11:26 AM
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My suggestion is far less ... technical. Play the guitars you are considering and buy the one that feels right.
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Old 08-24-2016, 11:36 AM
baimo baimo is offline
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Quote:
Originally Posted by terrapin View Post
You CAN take a length of solder, wrap it around the neck and then trace the resulting contour onto paper which can be made into a template to use for comparison purposes. This quite often works better than numbers, as those are not always easily available and the labels used (I.e., shallow C, modified V) can vary greatly from maker to maker.
Brilliant. Santa Cruz, Collings, Huss and Dalton, Martin all have versions of C and V shapes and they are all very different and very uninformative. Huss and Dalton has a soft V that is similar to a Martin low profile. It drives me nuts.

But then again, I guess I would have to go around to different stores with solder and Never Mind.

I guess I will have too try them each.
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Old 08-24-2016, 07:32 PM
mahoriver mahoriver is offline
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I was speaking to a luthier about a possible build.And how much i liked
the bigger vintage neck profile of a guitar i have.
He told me to cut off a strip of paper.Pull it tight around the neck at the 1st
fret,to the top edge of the finger board - mark both side's at edge.
Then lay the piece of paper flat and measure the distance between the two.
(said to do this at the 1 - 3 - 5 -7 - 9th fret)

On my 12 fret dreadnought at the 1 fret and measurement is 71mm - (2.79528" inch)

On my Martin with a "modified low oval neck" the measurement at 1st fret is 67mm (2.6378" inch)

I was surprised at the difference between the two.

By no means is it all the picture but ive found it really helps.

And of course the physical profile in the posts above,where you can compare the two in person is great.

Also neck depth at the 1st helps.
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Old 08-25-2016, 06:20 AM
Jimmy Recard Jimmy Recard is offline
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Quote:
Originally Posted by TConnelly View Post
Sounds like what you want is a contour gauge like this one from Harbor freight. You should be able to transfer that to heavy card stock and take it with you.

Cheers...................Todd
Yes, a profile comb (contour gauge) is what you want.
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Old 08-25-2016, 06:32 AM
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Toby Walker Toby Walker is offline
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To determine your neck size, measure around your neck just above your collar bone, putting 1 finger between the tape and your neck. Or simply measure and add 1/4 inch. Round up to the closest ½ inch size.
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Old 08-25-2016, 08:06 AM
Neil K Walk Neil K Walk is offline
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Quote:
Originally Posted by TConnelly View Post
Sounds like what you want is a contour gauge like this one from Harbor freight. You should be able to transfer that to heavy card stock and take it with you.

Cheers...................Todd
Quote:
Originally Posted by Jimmy Recard View Post
Yes, a profile comb (contour gauge) is what you want.
+2. They're incredibly cheap too. One caveat is that you should use something to protect the neck from scratches as it is made of metal. In this picture I am comparing the neck radius from my Larrivee and attempting to recreate it on a scratch build. I stuck some duck tape to the neck but cloth across the teeth of the comb will work in a pinch if you're careful.

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Old 08-25-2016, 08:27 AM
mahoriver mahoriver is offline
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Heres my attempt with a thin bit of ply / laminate.

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Old 08-25-2016, 01:26 PM
baimo baimo is offline
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Quote:
Originally Posted by Toby Walker View Post
To determine your neck size, measure around your neck just above your collar bone, putting 1 finger between the tape and your neck. Or simply measure and add 1/4 inch. Round up to the closest ½ inch size.
Hey that works!!
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