following is another brief
photo description of the making of a composite aluminium bodied 4/4 size violin
with a magnesium back, this
one is also bonded together with Araldite Super Strength two part epoxy resin.
The overall measurements are from 'Juliet Barker', the contour
templates are for a Sacconi Strad 1716 & the (adjusted) neck/scroll dimensions are from
The finished specifications are:
Body length 355mm
Top/end of fingerboard to belly (20.2mm)
Top bout 169mm
Bridge centre height
Middle bout 113mm
E string height above fingerboard (3.2mm)
Bottom bout 210mm
C " "
Rib height 32/34mm
Fingerboard to bridge
195mm Tailpiece saddle to bridge
130mm Saddle height above belly
Body thickness (Internal) 57.2mm String angle 58 degrees
Fingerboard length 270mm - Width at nut 29.5mm, at bridge end 46.6mm
Centre to centre spring spacing at nut, E-A-D-G 5.5mm, G-C 6.0mm
Centre to centre string spacing at bridge, E-A-D-G-C, 11.0mm
Vibrating string length 327mm (standard 2:3 ratio
Total length from top of scroll to endpin, 612mm
The arching are: top plate 13.8mm, back plate 11.2mm.
(Internal concavity: top plate 13.0mm, back plate 10.2mm.)
with 0.8mm aluminium used for the top plate and bass bar, the ribs are 0.5mm
aluminium and the rib
locating/edge reinforcement strips are 0.8mm aluminium.
The bottom plate is 1mm magnesium.
The neck is Bosnian Maple, blocks and sound post are Spruce, with ebony
finger board, nut, end pin and pegs.
The aluminium saddle is 3 mm and the 5 string tail piece is made from 1mm
The finished weight with attached extended height Dresden chinrest is 630 grams, compared to
582grams for the Aluminium bonded
bodied standard 4/4 Violin. The central torsional tube weighs 32grams so there is a further
possible weight saving there.
(the weight of a normal 4/4 sized wooden violin is approx. 450grams.
The strings are:
E - D'Addaro Helicore H311 4/4 Tinned High Carbon Steel, Medium Tension.
A - D'Addaro Helicore H312 4/4 Stranded Steel Core Aluminium, Medium Tension
D - D'Addaro Helicore H313 4/4 Stranded Steel Core Titanium, Medium Tension
G - D'Addaro Helicore H314 4/4 Stranded Steel Core Silver, Medium Tension
C - Palatino Nylon Core String