"I’m about 10 tops into a stack of 40 cedar tops I got from you, and whenever I want to start a new guitar, I just walk over and pick a top off the stack, and start building.
They are all that great! I don’t have to dink around with the pattern, or select the “best" one: I just start building. I love that!  I just wanted to let you know how much I appreciate your high standards, and what a pleasure it is to do business with you!"




Kerfing (L-R): Reverse, small, standard, triangular, and unkerfed. 

Our kerfing is a full 32 inches long
as opposed to the 16" long kerfing found elsewhere.


We are having trouble sourcing affordable spruce from which to produce spruce kerfing. While we continue our hunt, basswood kerfing is a good substitute.


Kerfing (or lining) provides a gluing surface for the joining of the backs, tops, and sides. Some builders use it with the kerf facing out, so the kerfs are visible, and others glue the kerfed face to the inside hiding the kerfs. Some builders choose the same type of wood as the soundboard for the kerfing along the top and sides.

5 profiles are offered in different woods:
  • The standard profile is the most traditional for steel string guitars and modern classicals.
  • The triangular profile is used if you have a smaller instrument, or binding and purfling scheme.
  • Our reverse kerfing is designed to give added stability to the sides. By gluing the kerfed face you effectively make the side that much thicker (and therefore more rigid) with little weight or mass added. With a radiused top edge, it presents a very clean look inside the body.
  • We offer unkerfed Basswood lining for more traditional classical guitars.
  • Ukulele, dulcimer and mandolin builders can use our small square kerfing.

GUITAR: Standard bevel and Reverse
7/32" x 5/8" x 32" (128" required)
6mm x 1.6cm x 81.3cm (325cm required)

GUITAR: Triangular

7/32" x  9/16" x 32" (128" required)
6mm x 1.4cm x 81.3cm (325 cm required)

  Small square
7/32" x 5/16" x 32" (120" required)
6mm x 8mm x 81cm (305cm required)

SKU Product Name In Stock Each 8+  
WKFB Kerfing, Basswood, standard
Yes $5.04 $4.49
WKFBR Kerfing, Basswood, reverse
Yes $5.04 $4.49
WKFBU Kerfing, Basswood lining, unkerfed
Yes $3.68 $3.27
WKFM Kerfing, Mahogany, standard
Yes $6.09 $5.42
WKFMR Kerfing, Mahogany, reverse
Yes $6.09 $5.42
WKFMT Kerfing, Mahogany, triangular
Yes $5.67 $5.05
WKFSM Kerfing, Mahogany, small
Yes $3.78 $3.36
WKFPOC Kerfing, Port Orford Cedar, standard
Yes $6.09 $5.42
WKFSC Kerfing, Spanish Cedar, standard
Yes $5.67 $5.05
WKFSCT Kerfing, Spanish Cedar, triangular
Yes $5.67 $5.05
WKFSP Kerfing, Spruce, standard
No $5.67 $5.05
WKFC Kerfing, Western Redcedar, standard
Yes $5.46 $4.86