Hannes®-Bridge
Everything a guitar builder needs to know about installing Schaller's new Hannes® bridge can be found on this page.
![](https://schaller.info/media/ea/f5/2f/1707309302/flyer_vorderseite_rgb.jpg)
1. Technical drawings of Hannes® 6, 7 and 8
2. Installation of Hannes® 6, 7 and 8
Determination of the correct intonation point for standard electric guitars
1.) For guitars without compensated saddle position e.g. Gibson, Fender etc.
- Measure the distance from the front edge of the saddle to the middle of the 12th fret
- multiply by 2
- Add 0.5 mm to this
- the result is the measure of the intonation point of the high e-string
If you draw a line parallel to the frets through this point, you get the intonation line.
2.) For guitars with compensated saddle position e.g. Tom Anderson, PRS, Buzz Feiten etc.
- Measure the distance from the front edge of the saddle to the middle of the 12th fret
- multiply by 2
- Add 2.0 mm to it
- the result is the measure of the intonation point of the high e-string
If you draw a line parallel to the frets through this point, you get the intonation line.
3. Installation templates of Hannes® 6, 7 and 8
Tools, machines and materials required:
- Transparent paper for template
- Drill bit for bridge mounting: 5,5 mm / 13,0 mm
- Drill bit for string ferrules: 6,0 mm
- Drill bit for string anchor plate: 1,5 mm
- Rounting machine for string anchor plate: 11,0 mm (10,0 mm)
- Flat drill
- Box column drill
- Hand router
The scope of supply includes the following accessories:
- 1 piece String anchor plate
- 2 pieces Wood screws LK 2,2x9,5
- 2 pieces Mounting screws SK M5x50
- 2 pieces Screw sockets (13,0 mm)
- 3 pieces Allen Keys (2,0/2,5/3,0 mm)
Schaller Hannes® Piezo cable layout and earthing
A connection must be formed between each of the string sockets (or at least one in every two) and the potentiometer or the switch, either by soldering or crimping.
![](https://schaller.info/media/ed/85/78/1708085516/img_1997_371-1.jpg)
![](https://schaller.info/media/5f/4e/b4/1708085516/img_1992_371-1.jpg)
Note
Our Schaller Hannes® bridge can be fitted to any guitar, provided that the body is flat at the point where the bridge is to be placed.
Begin by setting the Schaller Hannes® bridge up in such a way that the intonation screws are in the mid-way position (~ saddles are flush to the bridge).
The front edge of the high E-string's saddle must match up to the mensur line (place it accordingly).
![](https://schaller.info/media/37/8b/6f/1707309300/dsc_4181_190.jpg)
![](https://schaller.info/media/72/76/f8/1707309300/dsc_4174_190.jpg)
Individual steps
![](https://schaller.info/media/25/e6/65/1707309300/dsc_3906_190.jpg)
First mark out the center axis and the mensur on the body so that the template for the Hannes® bridge can be positioned exactly right.
![](https://schaller.info/media/d3/eb/2c/1707309300/dsc_3909_190.jpg)
Do this by laying a straight ruler of sufficient length on each side of the fretboard and marking the continued outline of the neck onto the body.
![](https://schaller.info/media/60/31/80/1707309300/dsc_3911_190.jpg)
Using the two lines, ...
![](https://schaller.info/media/28/8b/c5/1707309300/dsc_3921_190.jpg)
... mark out on the guitar body the center axis required to position the bridge.
![](https://schaller.info/media/23/f6/79/1707309300/dsc_3922_190.jpg)
![](https://schaller.info/media/5c/a7/86/1707309300/dsc_3925_190.jpg)
![](https://schaller.info/media/60/31/80/1707309300/dsc_3911_190.jpg)
The mensur point is obtained by multiplying the measurement...
![](https://schaller.info/media/a8/f8/6b/1707309300/dsc_3912_190.jpg)
![](https://schaller.info/media/2f/10/3b/1707309300/dsc_3913_190.jpg)
... from the nut ...
![](https://schaller.info/media/9a/d4/a3/1707309300/dsc_3914_190.jpg)
... to the 12th fret (middle of the fret) by two; In our example, this is 323.85mm x 2 = 647.7mm, i.e. typical mensur for Fender instruments.
![](https://schaller.info/media/aa/f8/eb/1707309300/dsc_3915_190.jpg)
The best thing to do is to use a tape measure to mark out the mensur on the central axis on the guitar body.
![](https://schaller.info/media/80/90/1e/1707309300/dsc_3928_190.jpg)
Then extend the mensur point left and right (based on the central axis at a 90° angle to the center axis).
![](https://schaller.info/media/77/85/99/1707309300/dsc_3929_190.jpg)
Now position the template on the axial cross you have drawn and fix it with adhesive tape.
![](https://schaller.info/media/6e/7d/4c/1707309300/dsc_3931_190.jpg)
![](https://schaller.info/media/96/a5/8c/1707309300/dsc_3936_190.jpg)
The line marked on the template must run over the axial cross.
![](https://schaller.info/media/33/52/43/1707309300/dsc_3939_190.jpg)
Use a sharp flat drill to mark out the required drill holes.
![](https://schaller.info/media/b9/08/22/1707309300/dsc_3943_190.jpg)
![](https://schaller.info/media/08/43/9b/1707309300/dsc_3949_190.jpg)
Once you have removed the template, you can drill the holes for the bridge to be mounted.
![](https://schaller.info/media/06/bc/0b/1707309300/dsc_3951_190.jpg)
Now drill the holes for fixing the bridge and for the string ferrules (on the front of the body). In order to drill the holes exactly, a box column drill is absolutely necessary.
![](https://schaller.info/media/0c/b6/35/1707309300/dsc_3952_190.jpg)
Drill bits with a centering tip should also be used - if available - in order for the holes to be drilled more precisely.
![](https://schaller.info/media/c1/33/86/1707309300/dsc_3968_190.jpg)
A 5.5mm drill bit is required for the bridge mounting screws, and a 6mm bit for the string ferrules.
![](https://schaller.info/media/77/17/35/1707309300/dsc_3971_190.jpg)
Once the drilling work on the front of the body is completed, ...
![](https://schaller.info/media/83/9d/e5/1707309300/dsc_3979_190.jpg)
![](https://schaller.info/media/98/4a/72/1707309300/dsc_3982_190.jpg)
...the two holes for the bridge mounting screws must be drilled out to 13mm diameter and 6mm depth on the rear of the body...
![](https://schaller.info/media/6d/b3/99/1707309300/dsc_3983_190.jpg)
![](https://schaller.info/media/9c/06/2b/1707309300/dsc_3984_190.jpg)
![](https://schaller.info/media/05/d2/63/1707309300/dsc_3988_190.jpg)
...to accomodate the two sockets for the two flat head screws. At this point, you can also check the toleranced dimensions for the bridge mounting screws.
![](https://schaller.info/media/a8/78/a4/1707309300/dsc_3989_190.jpg)
![](https://schaller.info/media/0e/4a/ea/1707309300/dsc_4046_190.jpg)
If the bridge mounting screws are too long, they can be shortened using a metal saw and deburred using a file.
![](https://schaller.info/media/7f/34/21/1707309300/dsc_4047_190.jpg)
![](https://schaller.info/media/53/cf/e4/1707309300/dsc_4051_190.jpg)
The bridge can now...
![](https://schaller.info/media/9c/24/b4/1707309300/dsc_4053_190.jpg)
... - as a test - be fitted in order ...
![](https://schaller.info/media/d6/44/da/1707309300/dsc_4054_190.jpg)
![](https://schaller.info/media/0d/7a/06/1707309300/dsc_4055_190.jpg)
![](https://schaller.info/media/0c/76/45/1707309300/dsc_4056_190.jpg)
... to check that it sits correctly and that the mensur is correct.
![](https://schaller.info/media/4b/8b/42/1707309300/dsc_4057_190.jpg)
![](https://schaller.info/media/c5/cb/ee/1707309300/dsc_4059_190.jpg)
Thanks
We would like to take this opportunity to thank the guitar maker Thomas Amberger, from the Oberpfalz in Bavaria, for helping us to put together these installation instructions!