Tapered maple shims are used to change the angle of a bolt-on neck.

To change the angle of a bolt-on neck, players and repair shops have used shims for years. We've seen everything from cigarette packets to guitar picks stuck in neck joints.

Those kinds of shims create an unwanted gap under the heel of the neck: a dead air space where humidity condenses to swell the wood. This gap may cause an upward kink in the neck, and many players feel they lose tone unless firm contact is maintained between the neck and the body.

These precisely tapered maple shims offer full contact: we have 3 different degrees for changing the pitch of any bolt-on neck. This listing is for individual shims or a set of 3 - one of each angle - select the one you want from the dropdown menu.These are accurately machined, unlike some of the Far Eastern copies.

0.25-degree shim offers the most versatility. Stacking them will let you really dial in the neck angle you're after. 0.5-degree shim is the one you'll reach for most often. It works great on Fender and many other solidbodies. 1-degree shim is great for guitars with a Tune-o-matic bridge or Floyd Rose, or for basses with a post mounted bridge.

Guitar shim specs

Taper specs (approximate)
0.25-degree shim tapers from 0.030" to 0.019" (0.76mm to 0.48mm)
0.5-degree shim tapers from 0.028" to 0.008" (0.71mm to 0.20mm)
1-degree shim tapers from 0.060" to 0.010" (1.52mm to 0.25mm)

Dimensions
Shaped: 2-3/16" x 3" (55.56mm x 76.12mm)
Blank: 2-1/4" x 3" (57.15mm x 76.12mm)

Shaped shims fit most neck pockets with a rounded heel. You can trim along the lasered line to fit the shims to a pocket with a flat heel, like a Tele.

Bass shim specs

Taper specs (approximate)
0.25-degree shim tapers from 0.030" to 0.019" (0.76mm to 0.48mm)
0.5-degree shim tapers from 0.028" to 0.008" (0.71mm to 0.20mm)
1-degree shim tapers from 0.060" to 0.010" (1.52mm 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. Blank shims are designed for odd screw spacings, smaller or non-standard neck pockets.