| The moulding plane was used to produce a piece of moulding for use as architectural decoration. As with all planes, the moulding plane was used to shave a sliver from off a piece of wood. But rather than producing a flat surface, as the surfacing plane would, the moulding plane produced a curved surface. The curved surface could be either concave, convex or a combination of both.
This particular example would produce a convex moulding, as seen in the images below that show the blade and bottom of the plane. A piece of wood planed into a convex moulding would appear to have a raised and rounded edge.