Carl,
Here are some dimensions for you:
Dimensions of a Fender Stringmaster
24.5" scale length
Neck 1 = 1.5" thick
Neck 2 = 1.875" thick
Neck 3 = 2.25" thick
Neck 4 = 2.625" thick
Neck Length = 34.25"
Neck Width at Bridge End = 4.6875"
Neck Width at Tuner End = 4.3125"
Widths Assembled-Bridge End - 4 Necks = 18.625"
3 Necks = 14.000"
2 Necks = 8.6875"
1 Neck = 4.6875"
Tuner End - 4 Necks = 17.3125"
3 Necks = 13.000"
2 Necks = 8.6875"
1 Neck = 4.3125"
Rabbets-Front Neck .375"deep x 1" wide
Second,Third & Fourth Necks .875"deep x 1" wide
Rear rabbet on each neck matches front rabbet on
the neck attached to its rear. Rear rabbet on outsidemost neck - .375" deep x 1.00" wide
Bridge is located at 4" from bridge end of each neck
Pickups are located at 5" and 6.5" from bridge end of each neck
Nut is located scale length distance from bridge.
Volume and Tone controls or switches are located 1.5" from bridge end of necks
Comparative measurements - 22.5" Stringmaster D-8
Length = 32.125"
Total Width = Bridge End = 9.3125"
Tuner End = 8.6875"
26" Stringmaster Total Length 36.25"
Pickups are located at 0.875" and 2.8125" to left of bridge...
All dimensions remain a constant for all guitars except for the total length which is based on scale length.
Total length increases by 2.00 inches for each increase in scale length e.g., 32,34, or 36 inches total length
for 22.5, 24.5 and 26 inch scale lengths, respectively.
Cavities and channels bored or routered 1-125" deep for pickups, blend, tone and volume controls.
A channel is needed to accommodate ball end of strings and wires between pickups and controls and input jack.
A 1.125" diameter hole is needed in front edge of front (inside)neck for input jack.
Templates are a must for boring and routing operations.
Take a look at my website at:
http://www.juststeelguitar.com/double
Click on the thumbnails for an example of just one of several clones I have built.
I used Ohio white ash 12" wide and 3" thick from Old Order Amish sawmill for my double neck guitars.
I wound the pickups to the Fender specifications.
Tuning head is made from 1" x 1/2" aluminum bar stock with Grovers.
Nuts and bridges are made from case-hardened 1/2" diameter bar stock. Fretboards made from Lucite and
1/16" auto striping and black lacquer.
Legs and sockets are from Bobbe Seymour.
New vintage Allen-Bradley potentiometers for volume and tone controls and CTS pickup balance control.
Finish is seven coats of nitrocellulose lacquer.
John Tipka