couple of very basic questions related to first tuning of my CBG…

I bought a set of electric guitar strings that are labeled 46, 36, 26, 17, 13 10 and understand that for a 3-string I’m supposed to use the A, D, and G strings. So, for the strings I bought is that strings 36, 28 & 17?
And, does anyone use the Guitar Tuna app? Selecting the Open G tuning, do I tune to these three tuners of a 6-string? (image attached)

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You are using the correct strings.  I haven't used Guitar Tuna, but it looks like you are doing it right.

Another G tuning is GBD, which you can do with 36 (A), 13 (B), 10 (e) strings...and then by tuning the A string down to G and the e down to d, you get more variations with three notes than the power chord tuning of GDg.

String it & make it sing...for sure. Cheers

This will put your g an octave + a major third below the b string! (16 frets worth) is a hellava gap there...
It may or may not be the best strings to use, difficult to say when you don't specify your scale length....

I like the lowest three, that way I can do another three string guitar with the high three. I do my necks a little shorter scale than fenders etc tho around 23.5"

With electronic tuners (or app etc) you really want a CHROMATIC tuner IMHO. This is one which tells you which note you're closest to as well as wether you a little flat or sharp. Rather than manually selecting a note. This because you're not using standard guitar tuning

great online tuner at

you can select/adjust note string by string...

OK, I used a 25.5" scale length and placed frets as listed by a fret calculator I found online.
Minus the pickup, the guitar is built and I’m just wanting to test to see if the frets were accurately placed. So, I’ll use strings 46,36,26. I understand that top string is tuned to G but the Tuna app reads “G2” middle string “D2” and bottom G2. Just doesn’t sound right. 

If you used the 46, that's normally an E string for a 25.5" scale length. Tuning that up to G is possible, but puts quite a strain on the neck. With 46-36-26 ( a strangely top heavy young lady I'll call E-A-D), you could easily achieve this tuning: E-A-E, by tuning that D string up to an E. You then would have an E5 power chord, that uses the same fingerings as G-D-G, but in the key of E. Alternatively, you could use the 36-26-17 (A-D-G), and tune to either G-D-G by tuning the A up to G, or even more useful, tune the A-D-G to A-D-F#, which allows for a movable chord system similar to that used on regular six string gits, as popularized by Keni Lee Burgess. Or as was said above, you can approximated 4-string banjo tuning, by using the 26-17-13, which is D-G-B (much easier and more balanced than the 36-17-10), or get even more jangly and high pitched by using the top 3 strings, 17-13-10, or G-B-E, and tune the E up to D, thus giving G-B-D.

As you can see, there's more than one way to go here; depends what tone you are looking for.

> use the 36-26-17 (A-D-G), and tune to either G-D-G by tuning the A up to G

OK, Is the bottom G an octave higher than top G? (Trying to understand the app’s notation before I go snap a string.) drawing attached.

Does anyone else find that slackening the A down to G makes it lose some of it's "omph" - I think I'm going to try two D's and tune one up to G - any suggestions before I lose an eye??

Perhaps a little, but depends on scale length and string gauge, I suppose.  I tend to use medium resonator (nickel) strings lately and seems to have plenty of push tuned GDG.

I like Pitchlab (free) tuner on my android phone.  

There are at least a half dozen visualizations for tuning including chromatic display and you can set up custom quick tunings as well.  There is even a continuous chromatic tuner that I use to get my ear trained to sing the same note as I'm playing with along with the guitar.

Presently, my favorite tuning is a 4 string using EADG strings tuned DGdg.  I can select to mute the low D with my thumb when strumming and just finger chords on the Gdg strings, or use the low D as a bass.  Great tuning for rhythm and bass.  Not so much for playing strong leads.

safety glasses, for starters, hehe

I've used the same strings from a set of  10-46  , tune the (36) from A down to G and the other 2 as a normal 6 string guitar tuning  , so it 'll be G4 (36) , d3 (27) and g3 (17) on the tuner , hope this is clear , download Witchita Sams tuner , select open G which is DGDGBD  and just use the GDG to tune yours i'll be spot on .


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