The sides are now ready to have the kerfing glued on in prep for receiving the back and top.  You can see in the first photo that the inside of the sides is a little darker than the outside; that’s the result of the treatment with CA.
Sides Ryan A4 Kerfing 3D

The second photo shows Kevin Ryan’s A4 kerfing.  Kevin uses a laser cutting machine to make very thin-kerfed cuts of the wood but cuts both sides which allows the kerfing to move in three dimensions like one of those old watch bands from the 60s and 70s from Speidel.  Very, very clever.  It solves a lot of problems.  You no longer have to break the kerfing in several places to allow it to curve along the radius of the back, a problem especially noticeable around the cutaway.  The installation is faster, too, and ends up with very little or no squeeze out (fourth photo.)

easy clean up Chalking

After both the top and back are applied I whip out my daughter’s chalk again and mark up the edges, then sand the kerfing flush with the rest of the sides using the radius sanding dishes again. This step takes only a couple of minutes.

Next steps: putting the neck together and inlaying the rosette in the top.

3 Responses to “Kerfing”

  1. 1 JSD

    Hi – Where did you obtain the A4 Ryan Kerfing from? Thanks. Great blog!!!

  2. 2 Seth

    JSD: I got the kerfing directly from Kevin last winter when I was visiting his shop. Kevin and Barbara told me they planned to sell it to other luthiers; you should be able to find a link on their site. If not, give Barbara a call. Very, very nice lady. Thanks for the kudos, by the way.


  3. 3 JSD

    Thanks again. Perfect.

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