#1
i'm trying to plan out a build of a mini guitar(so i can lug it around everywhere) from scratch.

is it possible for me to keep the fret size of a regular guitar(just with 16-18 frets) and have a smaller overall guitar?
#2
to an extent, You need to have the same distance between the 12th fret and the bridge and the 12th fret and the nut or it won't intonate properly.

Edit: so basically, you can make a smaller guitar, but the bridge will have to stay put.
#3
the bridge would need to be in the same place, i think
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#4
i don't understand
am i right in thnking that i can't because the nut and bridge have to be the scale length apart
#5
Quote by mrmarc772
i don't understand
am i right in thnking that i can't because the nut and bridge have to be the scale length apart

They have to be the same distance from the 12th fret.

so measure from the bridge to the 12h fret, then measure from the nut to the 12th fret, it will be the same distance on all well made guitars.
#6
^i'm sorry i'm just having a hella hard time rapping my brain around this...
for example how do i keep the frets on the mini, the same as those of a guitar with a 25-1/2 scale and still make it travel sized?
#7
basically what hes saying is the 12th fret will need to be the midpoint between the nut and bridge.. its not hard to get. say you can cut the last 9 frets off leaving 16 frets.. or make a neck with 16 frets.. but the 12th fret will have to be the midpoint between the bridge and nut. for example if you cut the last 9 frets off a regular neck and slid it down and into place somehow then the bridge would have to be set back further as the 12th fret is now closer to the bridge but same distance from the nut.

if i got that right. someone correct me if im wrong.
#8
???yah wouldn't you have to move the bridge back the amount that you slid the neck up?
#9
^ its not a bass. the bridge shouldnt be all the way back.
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#10
Quote by haywood_306
basically what hes saying is the 12th fret will need to be the midpoint between the nut and bridge.. its not hard to get. say you can cut the last 9 frets off leaving 16 frets.. or make a neck with 16 frets.. but the 12th fret will have to be the midpoint between the bridge and nut. for example if you cut the last 9 frets off a regular neck and slid it down and into place somehow then the bridge would have to be set back further as the 12th fret is now closer to the bridge but same distance from the nut.

if i got that right. someone correct me if im wrong.

Yup thats right.


16 Fret Guitar
25.5" fret scale  	Printable
  fret   		  from nut   		  fret to fret  
 1  		 1.431"  		 1.431"  (nut-1) 
 2  		 2.782"  		 1.351"  (1-2) 
 3  		 4.057"  		 1.275"  (2-3) 
 4  		 5.261"  		 1.203"  (3-4) 
 5  		 6.397"  		 1.136"  (4-5) 
 6  		 7.469"  		 1.072"  (5-6) 
 7  		 8.481"  		 1.012"  (6-7) 
 8  		 9.436"  		 0.955"  (7-8) 
 9  		 10.338"  		 0.902"  (8-9) 
 10  		 11.189"  		 0.851"  (9-10) 
 11  		 11.992"  		 0.803"  (10-11) 
 12  		 12.750"  		 0.758"  (11-12) 
 13  		 13.466"  		 0.716"  (12-13) 
 14  		 14.141"  		 0.675"  (13-14) 
 15  		 14.779"  		 0.638"  (14-15) 
 16  		 15.380"  		 0.602"  (15-16) 

Distance from nut to Bridge at forward-most point: 25.562" 



22 Fret Guitar

25.5" fret scale 	Printable
  fret   		  from nut   		  fret to fret  
 1  		 1.431"  		 1.431"  (nut-1) 
 2  		 2.782"  		 1.351"  (1-2) 
 3  		 4.057"  		 1.275"  (2-3) 
 4  		 5.261"  		 1.203"  (3-4) 
 5  		 6.397"  		 1.136"  (4-5) 
 6  		 7.469"  		 1.072"  (5-6) 
 7  		 8.481"  		 1.012"  (6-7) 
 8  		 9.436"  		 0.955"  (7-8) 
 9  		 10.338"  		 0.902"  (8-9) 
 10  		 11.189"  		 0.851"  (9-10) 
 11  		 11.992"  		 0.803"  (10-11) 
 12  		 12.750"  		 0.758"  (11-12) 
 13  		 13.466"  		 0.716"  (12-13) 
 14  		 14.141"  		 0.675"  (13-14) 
 15  		 14.779"  		 0.638"  (14-15) 
 16  		 15.380"  		 0.602"  (15-16) 
 17  		 15.948"  		 0.568"  (16-17) 
 18  		 16.484"  		 0.536"  (17-18) 
 19  		 16.990"  		 0.506"  (18-19) 
 20  		 17.468"  		 0.478"  (19-20) 
 21  		 17.919"  		 0.451"  (20-21) 
 22  		 18.344"  		 0.425"  (21-22) 

Distance from nut to Bridge at forward-most point: 25.562" 


See What I'm saying?

Quote by christianbassis
^ its not a bass. the bridge shouldnt be all the way back.

It should be if it needs to intonate properly.
#11
^ It works for V and X shaped guitars.

You could build something like this.

Or even something like this.
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#12
the short answer is "not really"

if you want each fret to be the same distance apart as normal... you need to keep the distance from nut to bridge the same as in a full size guitar.
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#13
LISTEN TO ME: (everyone else is just confusing) Theoretically, the smallest you could make the guitar would be the scale length you choose, you mentioned 25.5", you might also consider 24.75 like a les paul.

You will need to lengthen the guitar for the headstock (6-8"), and for the bridge to have something to stick into (1-2"). So I'm thinking you could make it around 35" long, and as skinny as you need really. There's no need really to cut back on the number of frets, unless you want to squeeze more pickups in there, because the guitar will be just as long anyways.

Good luck, and keep us posted!
#14
^goodness me that was the kind of diffinitive answer i was looking for

thank you all for your replies

i will continue my planning with a 22.5" scale i think


EDIT: i will definately take plenty of pictures so i can share with the ug, but before i start building i'm off to autoCadd to make a full scale representation of what i'm planning, then i'll order the parts and such then we have 2 weeks off from school so i'm hoping to make headway during that time

once again thank you all
Last edited by mrmarc772 at Oct 31, 2007,
#15
Zofar, how did you come up with those numbers? Is it a mathematical formula, or, hopefully, done on a computer?
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#16
The fret spacing is entirely dependent on the scale length.

The numbers in Zofar's post can be derived via a formula that involves 2 raised to the power of n/12. Here's the logic behind it and the formula....

Take 1/2 the scale length because that is one octave. Let's call that "L". The fret distance can be calculated as follows...

for n = 1 to 12, the distance from the nut to fret n = L - (((2 ^ (12-n)/12) - 1) X L)

This probably can be simplified, but I just figured it out based on the formula that the notes in an octave are increased in pitch by 2 ^ n/12 for n = 1 to 12.
#18
I like that 2nd option more lol. But, it's good to know how to do it on you own.
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