DIMENSIONI DELLA CHITARRA
CORDA ACUSTICA IN ACCIAIO
Guida di base del liutaio per la progettazione e la costruzione di chitarre
Acoustic Guitar Typical Body Top, Back, Side Thickness
Steel-String Acoustic Guitar (All Types)
Top Thickness: 0.085-0.130 in / 2.16-3.30 mm
Side Thickness: 0.070-0.100 in / 1.78-2.54 mm
Back Thickness: 0.085-0.125 in / 2.16-3.18 mm
Encompasses dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; spruce/cedar tops typically 2.4-3.3 mm, sides thinner for flexibility, backs match tops for balance.
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Acoustic Guitar Typical Body Top & Back Radius
Steel-String Acoustic Guitar (All Types)
Body Top Radius: 240.000-360.000 in / 6096.00-9144.00 mm
Body Back Radius: 120.000-240.000 in / 3048.00-6096.00 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; top radius typically 20-30 ft (240-360 in) for resonance, back radius 10-20 ft (120-240 in) for structural balance; smaller bodies may use flatter radii, larger bodies (e.g., dreadnought) trend toward 15 ft back, 25 ft top.
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Acoustic Guitar Typical Sound Hole Diameter
Steel-String Acoustic Guitar (All Types)
Sound Hole Diameter: 3.750-4.250 in / 95.25-107.95 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; larger bodies (e.g., dreadnought, jumbo) typically have wider sound holes (4-4.25 in), while smaller bodies (e.g., parlor, travel) trend smaller (3.75-4 in) for tonal balance.
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Acoustic Guitar Typical Neck Dimensions
Steel-String Acoustic Guitar (All Types)
Neck Thickness at Nut: 0.800-0.900 in / 20.32-22.86 mm
Neck Thickness at Base: 0.850-1.000 in / 21.59-25.40 mm
Width at Nut: 1.650-1.875 in / 41.91-47.63 mm
Width at 12th Fret: 2.000-2.250 in / 50.80-57.15 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; neck thickness varies by profile (e.g., slim C to chunky V); nut width typically 1.68-1.75 in for most, wider for fingerstyle.
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Acoustic Guitar Typical Fingerboard & Fret Slot Dimensions
Steel-String Acoustic Guitar (All Types)
Fingerboard Thickness: 0.200-0.250 in / 5.08-6.35 mm
Fingerboard Radius: 12.000-16.000 in / 304.80-406.40 mm
Fret Slot Depth: 0.040-0.050 in / 1.02-1.27 mm
Fret Slot Width: 0.023-0.025 in / 0.58-0.64 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; fingerboard thickness typically 5-6 mm for stability; radius varies (12" for vintage, 16" for modern playability); fret slot depth and width standardized for medium jumbo frets, may vary slightly by luthier.
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Acoustic Guitar Typical Headstock Dimensions & Angle
Steel-String Acoustic Guitar (All Types)
Headstock Width at End: 2.500-3.500 in / 63.50-88.90 mm
Headstock Width Near Nut: 2.000-2.750 in / 50.80-69.85 mm
Headstock Thickness: 0.500-0.625 in / 12.70-15.88 mm
Headstock Veneer Thickness: 0.020-0.040 in / 0.51-1.02 mm
Peg Hole Diameter: 0.375-0.406 in / 9.53-10.31 mm
Headstock Angle: 10.0-15.0 degrees
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; headstock width at end wider for tuner placement, narrower near nut; thickness typically 13-15 mm for structural integrity; veneer (often rosewood or ebony) adds aesthetic layer; peg hole diameter fits standard tuning machines (e.g., 10 mm for modern tuners); headstock angle typically 10-15 degrees for string tension, with 15 degrees common in Martin dreadnoughts.
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Acoustic Guitar Typical Saddle Dimensions
Steel-String Acoustic Guitar (All Types)
Saddle Thickness: 0.080-0.125 in / 2.03-3.18 mm
Saddle Length: 2.750-3.250 in / 69.85-82.55 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; saddle thickness typically 2-3 mm to fit bridge slot and ensure stability; length varies by bridge size, longer for larger bodies (e.g., dreadnought) at ~3 in, shorter for smaller bodies (e.g., parlor) at ~2.75 in.
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Acoustic Guitar Typical Action at Saddle, 12th Fret & Nut
Steel-String Acoustic Guitar (All Types)
Action at Saddle (Bass/Treble): 0.080-0.120 in / 2.03-3.05 mm (Bass), 0.060-0.100 in / 1.52-2.54 mm (Treble)
Action at 12th Fret (Bass/Treble): 0.090-0.110 in / 2.29-2.79 mm (Bass), 0.070-0.090 in / 1.78-2.29 mm (Treble)
Action at Nut: 0.015-0.025 in / 0.38-0.64 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; action at saddle higher on bass side (2-3 mm) for volume, lower on treble (1.5-2.5 mm) for playability; 12th fret action typically 2-2.8 mm (bass), 1.8-2.3 mm (treble) for balance; nut action low (0.4-0.6 mm) for easy fretting, varies by player preference.
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Acoustic Guitar Typical
Scale Length
Steel-String Acoustic Guitar (All Types)
Scale Length: 24.000-26.000 in / 609.60-660.40 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; scale length typically 25.4-25.5 in (645-648 mm) for dreadnoughts and grand auditoriums (e.g., Martin D-28, Taylor 414ce), shorter at 24-24.9 in (610-632 mm) for parlor and travel models, longer up to 26 in (660 mm) for some jumbos; affects string tension and playability.
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Acoustic Guitar Typical
Body Size
Steel-String Acoustic Guitar (All Types)
Body Depth: 3.500-5.000 in / 88.90-127.00 mm
Overall Body Length: 18.000-21.000 in / 457.20-533.40 mm
Overall Body Width: 13.500-16.500 in / 342.90-419.10 mm
Covers dreadnought, grand auditorium, jumbo, parlor, orchestra, grand concert, and travel models; body depth deeper in dreadnoughts/jumbos (4.5-5 in), shallower in parlors/travel (3.5-4 in); length typically 19-20 in for dreadnoughts, 18-19 in for parlors; width wider in jumbos (15-16.5 in), narrower in parlors (13.5-14.5 in).
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