Tops glued and clamped on Tonedevil Harp Guitars Posted on May 27, 2013 by Tonedevil GuitarsDecember 13, 2013 The next 3 S-12 harp guitars got the tops and backs glued on, as well as fingerboards and head veneers; the only thing left now is to do final shaping, finishing, glue on the bridge, install tuners and string them up!!