Spline Jointed Corners

Ash frame with double walnut spline

Typically, frames are joined by firing metal V shaped ‘underwedges’ into the reverse of the frame. However, with woods of a greater density, this can force the back edge open. Spline jointing gives a sharp and clean corner as well as offering a stylish aesthetic to a hardwood frame.

Contrasting species of wood can be used to provide something more eye catching, or matching species for a more subtle look. They can be done as singles, doubles, triples, and if the moulding is deep enough, even quadruples. Paint can also be applied to accentuate them and add a pop of colour.

Walnut frame with single oak spline

Spline jointed corners can also be shaped, and rounded as in the example above.

Here is an example of an oak frame, with oak splines and a liming wax finish on the back edge.