Impressive Shop Jiggery for Cutting a Molding Profile Into an Arched Workpiece

Doorways and windows with curved architraves present a challenge for fabricators. How do you cut the molding profile along the curve?Australian firm McKay Joinery solves this with an impressive jig that they fit over their shaper:It’s hard to believe that prior to industrialization, this was done by hand, using carving gouges.