Feel Like A Heel
Necks and Heels on C. F. Martin Guitars
The earliest Martin guitars had what is known as an "ice cream cone" heel, for obvious reasons:
Many of these necks have a raised fretboard extension, and are adjusted by a clock key mechanism.
Comparison of neck joints with clock key adjustments on a Stauffer and Hudson St. Martin.
The first "Spanish" Martins were a distinct style with specific features, including a line though the middle of the sides, and an elegant heel, often made with two pieces of wood.
1840's Spanish Style Martin and Coupa
1840's Spanish Style Martin
On this 1850's Style 2-24, we can see a more conventional, and less elegant heel, though still a 2 piece heel, unlike later Martins.
1850's Martin 2-24
I've measured a few early Martins and rated the curve of the heels with two numbers indicating the distance in 32nds of an inch from the guitar body to the shallowest point of the curve and the distance from the guitar body to the peak at the end point of the heel:
Early Spanish Martin & Coupa
18/26 curve 2 piece heel
1840's Spanish Style Martin
18/26 curve 2 piece heel
Hybrid X 1-28
21/26 curve 2 piece heel
Pearl zig zag border size 1
22/26 curve heel
Pearl Rosette 1-28
22/26 curve heel
The regular zig zag border size 1
27/30 curve heel
The regular zig zag rosette size 1
27/30 curve heel
Spanish heel Style 2-24
23/24 curve 2 piece heel
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