12-stringer to 7-string DONE - Acoustic mod project

   Heavy Metal Guitar   

Page 1 of 3 123 LastLast
Results 1 to 8 of 17

Thread: 12-stringer to 7-string DONE - Acoustic mod project

  1. #1

    Join Date: Jul 2009
    Location: Finland

    iTrader: 0

    12-stringer to 7-string DONE - Acoustic mod project

    Hi guys,

    knowing how acoustic 7's are sought after, I'm thinking some of you might be interested in this. And no less because the total costs for this mod -and a succesful one - were under 200 euros.

    So what gives? Well, I wanted my own acoustic 7. Things were expensive, though, so I thought that basically a 7-string neck is a wider 6-string neck. 12-string acoustic guitars tend to have wider necks than 6-stringers. Conclusion? Get a 12-stringer and modify it to take 7 strings.

    And it works. Here's how it was done.

    Disclaimer: Cheap parts and experimental attitude = not the best level of work possible. Aestethics aside, functionality was the most important thing here.

    Your regular, run-of-the-mill cheapo del cheapo 12-stringer. It sounded actually better than I thought, costing only 150 euros, but let's not expect too much from it. It works and doesn't sound absolutely horrid. You can also see the original, normal bridge. Just to be sure that the strings would have an even spacing, I just couldn't use the old pinholes. Solution...

    Blank peace of rosewood from Stewmac. Measured and drilled, here stand the 7 holes that will be occupied by the strings. 5 mm holes behind and 2 mm holes in the front, those will hold my strings like some makeshift tune-o-matic tailpiece.

    Shaping one

    Shaping two. What can't you do with a dremel?

    Tried to get a good pic of the holes. You propably got the idea anyhow, but here anyway.

    Final shaping. Getting together there.

    Also made the nut and bridge piece from bone. Blanks also that I bought originally.

    And voilá, here's the final assembly.

    So, a two-day project that gave me something unique and who knows, useful. I just might do this again some day, with better parts (or a better guitar to start with), since there are some flaws here that I'm not so happy with. Such as:

    - Nut. Never ever file the slots with an attitude "oh the string jumps out, I'll better make this slot deeper". Now I've got a buzzing low B on the first fret. Second buzzes none, so I just might file the first fret a little lower, or get a tighter string, or just make a new nut. Anyway, first nyt ever I've made so all in all I'm happy with this.
    - Makeshift string holder. It works like a charm. Glued it with plentiful titebond and it holds well, so that's a relief. Could have spent more time to finish it better, but it works and I'm happy - next time I'll pay more attention to detail.
    - Since the peg holes are untouched, This thing can be yet converted back to a 12-stringer by changing the nut. Now yes there are 12 tuner pegs but 7 strings for now, so I'll have to consider do I want modularity or aestethics.

    And the most important lesson...
    It works. It plays. It can be done.

    A 7-string acoustic for cheap. Not the most elegant solution, but definetly playable.

    Just make sure you have a dremel tool

    Any questions I'm happy to answer

  2. #2

    Join Date: Jan 2009
    Location: London, Ontario, Canada
    ME: WarmothTele/SE245
    MA: Seagull S12+
    MB: Fender Jazz Bass V
    Rig: Egnater Renegade 65

    iTrader: 2 (100%)


  3. #3

    Join Date: Sep 2008
    Location: Boston, MA
    ME: EBMM JP6 / JP7
    MA: Martin DC-1E
    Rig: Axe-Fx II XL

    iTrader: 34 (100%)


  4. #4

    Join Date: Apr 2010
    Location: Norman, OK
    ME: Gibson SG Special
    MA: Yamaha FSX700SC
    Rig: Fender Deluxe VM

    iTrader: 0

    Did you use metal ferrules in the back of that tailpiece to keep the ball end from eating into the rosewood too much?

  5. #5

    Join Date: Oct 2008
    Location: Seekaaahhhk, MA
    ME: Bugsy
    MA: Cane
    Rig: Bias

    iTrader: 2 (100%)


  6. #6

    Join Date: Oct 2008
    Location: Phx, AZ
    ME: Custom Tele
    MA: Guild GAD F150
    MB: Fender Jazz Bass 24 V
    Rig: Jet City JCA-22H

    iTrader: 16 (100%)

    That looks great man what gauge strings are you using and what brand?

  7. #7

    Join Date: Sep 2008
    Location: Far, far away...
    ME: Les Paul Standard
    MA: Yamaha 6er/Tacoma 12
    MB: Peavey
    Rig: Blackstar Stage 60

    iTrader: 1 (100%)

    "The greatest power one may possess -- in any situation -- is simply not to care what happens.

    "In fact, it's the only power, all others being a semblance and mockery of it. But you must also not care about possessing the power itself. So fuck it."

    Thomas Ligotti

  8. #8

    Join Date: May 2010
    Location: Portland, OR
    ME: Les Paul
    MA: Les Paul
    MB: Les Paul
    Rig: Mini Rec

    iTrader: 10 (100%)

    Making metal every night and day.

Similar Threads

  1. Six-string acoustic bass.
    By distressed_romeo in forum Music: Other Instruments
    Replies: 2
    Last Post: 07-17-2010, 11:07 PM
  2. 7 string acoustic on the 'bay
    By Chris in forum Guitar: Instrument Discussion
    Replies: 10
    Last Post: 07-02-2010, 09:37 PM
  3. Steve Morse's new acoustic/female voice project
    By distressed_romeo in forum General Music Discussion
    Replies: 0
    Last Post: 05-05-2010, 02:54 PM
  4. Baritone eight-string acoustic.
    By distressed_romeo in forum Guitar: Instrument Discussion
    Replies: 14
    Last Post: 12-22-2009, 06:29 PM
  5. Replies: 0
    Last Post: 02-22-2009, 08:30 PM

Tags for this Thread

Fractal Audio Systems  Shred Training  Angel Vivaldi
Bowes Guitarworks  Decibel Guitars  NumbSkull Audio Production

VigLink badge