Specifications
I build essentially one model in many variations. Body size and shape (patterned after a 1943 Hauser, Sr.) generally remain constant, but woods, neck profiles, and other details vary from instrument to instrument and are always individually designed to meet the needs of the customer.
Following are specifications for a typical 650-scale instrument. Most of them can be adapted to fit your requirements, including the body size should you prefer an instrument with a shorter scale length.
Neck
- Thickness: 1st fret - 21 mm; 9th fret - 23 mm;
- Material: Spanish cedar;
- Reinforcement: double graphite rod;
- Contour: Slightly thinner on treble side to facilitate barreing.
- [New, August, 2005] Adjustable neck-rod now installed in all instruments.
Fingerboard
- Width: nut - 52.5 mm; 12th fret - 62.5 mm;
- Position markers: 2 mm dot at 7th fret;
- Extra frets: 20th fret for 3 treble strings;
- Material: ebony;
- Contour: nearly flat at the 1st fret, increasing to 1-metre-radius arc at higher frets to facilitate barreing.
- Elevated fingerboard: Fretboard surface is approximately 1.4 cm above the soundboard at the neck/body joint to facilitate playing beyond the 12th fret.
Strings
- Spacing (center to center):
- Nut - 8.9 mm (44.5 mm from 1st to 6th);
- Bridge - 11.5 mm (57.5 mm from 1st to 6th);
- Action height at 12th fret: 1st string - 2.8 mm; 6th string - 3.9 mm;
- String height at bridge: 1st string - 10.0 mm; 6th string - 10.0 mm.
- Soundboards designed for either medium or high tension strings.
Frets
- High frets (1.0 - 1.1 mm) are standard;
- Bevel on ends: 20 degrees;
- Usable fret surface: 1st fret - 52 mm; 12th fret - 61 mm.
Nut and saddle
- Thickness: nut - 4 mm; saddle - 4 mm;
- Compensation: strings individually compensated at saddle;
- Material: fossilized mammoth ivory.
- Saddle slanted for greater downbearing pressure.
Bridge
- Tie block: 12-hole type;
- Material: Brazilian rosewood.
Head
- Thickness: 19 mm;
- String slot width: 14 mm;
- Roller-hole spacing: 35 mm (fits all standard tuners).
Body
- Length: 48.5 cm;
- Width:
- Upper bout - 28.2 cm;
- Waist - 24 cm;
- Lower bout - 36.8 cm;
- Depth:
- Neck/body joint - 8.9 cm;
- Tailblock - 9.7 cm;
- Arcing: Top and back are arced in both length and width;
- Total length of guitar (body + neck): 100 cm.
Finish
- French-polished shellac on soundboard; lacquer on back, sides, and neck for greater durability;
- Optional oil finish on neck for greater playability;
- Optional French polish finish throughout.
Weight
- Completed instrument (without strings and tuners) typically weighs 1500 grams (approximately 3.3 pounds).
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