StewMac Neck Shim for Bass, Shaped, 0.25 degree

StewMac Neck Shims for Bass
Tapered maple shims designed to adjust the angle of bolt-on necks for better playability. For years, players and repair shops have used makeshift shims like matchbook covers or guitar picks, but these create unwanted gaps under the neck heel that can cause issues like wood swelling or loss of tone.
These StewMac neck shims offer a full-contact solution, covering the entire neck heel to maintain firm contact between the neck and body. Created by renowned repair expert Dan Erlewine, these shims are tapered to fit perfectly and improve neck angle while preserving tone.
Available in 3 Degrees:
- **0.25-degree shim**: Versatile for fine-tuning neck angles. Stackable for dialing in precise adjustments.
- **0.5-degree shim**: The most common choice, ideal for Fender-style guitars and solidbody instruments.
- **1-degree shim**: Perfect for bass guitars with a post-mounted bridge.
Taper Specs (approximate):
- 0.25-degree: Tapers from 0.030" to 0.019" (0.76mm to 0.48mm)
- 0.5-degree: Tapers from 0.044" to 0.010" (1.11mm to 0.25mm)
- 1-degree: Tapers from 0.078" to 0.010" (1.98mm to 0.25mm)
Dimensions:
- Shaped: 2-1/2" x 3-7/8" (63.50mm x 98.43mm)
- Blank: 2-3/4" x 3-7/8" (69.86mm x 98.43mm)
Shaped shims fit most neck pockets with a rounded heel, while blank shims are ideal for custom designs or odd screw spacings.
Complete Shop Set: Includes 12 shims—3 each of shaped and blank shims for both guitar and bass, in every degree of taper. Made from solid maple to match the neck.

• 0.25-degree shim offers the most versatility. Stacking them will let you really dial in the neck angle you're after.