MikeD Posted November 2, 2010 Report Share Posted November 2, 2010 hey all I'm working on a 7 string and I can't find any solid plans for a 7 string. Could anyone tell me what a pretty standard width at 12th fret would be for a 7 string with a standard 48mm nut? Thanks. Quote Link to comment Share on other sites More sharing options...
DC Ross Posted November 2, 2010 Report Share Posted November 2, 2010 If you're using a 48mm nut, the 12th fret width is determined by the string spacing of the bridge you're using... Quote Link to comment Share on other sites More sharing options...
ihocky2 Posted November 3, 2010 Report Share Posted November 3, 2010 To expand on what DC is saying. Draw the nut at 48mm wide, now draw the string width of the bridge at whatever your scale length is. Add 1/8" to each side of the bridge, connect these points to the nut. This is your correct neck taper. Quote Link to comment Share on other sites More sharing options...
Prostheta Posted November 3, 2010 Report Share Posted November 3, 2010 To expand on what ihocky said, neck width is a function of string spacing at the nut, the bridge and margin either side of the strings. A 48mm nut with a 42mm string spread with a 60mm string spread at the bridge would measure (((60+(48-42))-48)/2)+48 at the 12th fret (57mm in this example). Easy to simplify, but you can see what that means. It just assumes a constant distance from the string to the edge of the fretboard down the entire length. Plug in and go! Quote Link to comment Share on other sites More sharing options...
MikeD Posted November 3, 2010 Author Report Share Posted November 3, 2010 Thank you all. That makes a lot of sense now. Quote Link to comment Share on other sites More sharing options...
MikeD Posted November 3, 2010 Author Report Share Posted November 3, 2010 To expand on what ihocky said, neck width is a function of string spacing at the nut, the bridge and margin either side of the strings. A 48mm nut with a 42mm string spread with a 60mm string spread at the bridge would measure (((60+(48-42))-48)/2)+48 at the 12th fret (57mm in this example). Easy to simplify, but you can see what that means. It just assumes a constant distance from the string to the edge of the fretboard down the entire length. Plug in and go! Wait would scale length affect this at all? Quote Link to comment Share on other sites More sharing options...
westhemann Posted November 4, 2010 Report Share Posted November 4, 2010 Of course Quote Link to comment Share on other sites More sharing options...
MikeD Posted November 4, 2010 Author Report Share Posted November 4, 2010 Ok, now I'm confused. How would that factor into this all? By the way I'm looking at 64.8mm string spacing at bridge, 41.78mm spacing at nut, and 49.53mm nut width. Using prosthetas method, which makes sense to me, I get 61.04mm width at 12th. It this off? Quote Link to comment Share on other sites More sharing options...
DC Ross Posted November 4, 2010 Report Share Posted November 4, 2010 61.04mm sounds about right, but honestly, that measurement never comes into play when actually building the instrument (for me, anyway). Quote Link to comment Share on other sites More sharing options...
westhemann Posted November 4, 2010 Report Share Posted November 4, 2010 Look man,I don't know about mathematical formulae...But I do have a firm natural sense of geometry,and I can visualize this sort of thing as a picture in my head. Picture the nut at the end of a centerline running lengthwise down the guitar space...the bridge is at the other end.You draw in the width of the nut(halved on the centerline) and the width of the bridge(the string spread on both,not the total width)...you add 1/8" to both sides of both ends,then you draw a straight line down each side intersecting those points... There is obviously one factor missing in that geometric design,you see...The scale length(distance from nut to bridge,in a rough sense)..the scale length is going to help determine the exact width of the neck at the 12th fret.Simplicity itself Quote Link to comment Share on other sites More sharing options...
westhemann Posted November 4, 2010 Report Share Posted November 4, 2010 that measurement never comes into play when actually building the instrument Meaning the width at 12th fret?For me either.I draw it out on a piece of posterboard and use that as a template for reference. Quote Link to comment Share on other sites More sharing options...
westhemann Posted November 4, 2010 Report Share Posted November 4, 2010 Quick sketch up so you can visualize better Centerline/scale length/nut and bridge string spread,add 1/8" on both sides,connect dots,measure half scale length=width at 12th fret. Quote Link to comment Share on other sites More sharing options...
MikeD Posted November 4, 2010 Author Report Share Posted November 4, 2010 That makes more sense. I guess I was overcomplicating this. thanks for the help. Quote Link to comment Share on other sites More sharing options...
Donnb Posted January 1, 2011 Report Share Posted January 1, 2011 So for a TOM 7 with string spacing of 62 (25.5 scale), the neck would go from 48 nut to 68 heel. Correct? Quote Link to comment Share on other sites More sharing options...
Linny Posted January 1, 2011 Report Share Posted January 1, 2011 So for a TOM 7 with string spacing of 62 (25.5 scale), the neck would go from 48 nut to 68 heel. Correct? That would be correct. Quote Link to comment Share on other sites More sharing options...
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