A wood shaper, usually just shaper in North America or spindle moulder or just moulder in Ireland, is a stationary woodworking machine in which a vertically oriented spindle drives cutter heads to mill profiles on wood stock. The wood being fed into a moulder is commonly referred to as either stock or blanks. The spindle may be raised and lowered relative to the shaper’s table, and rotates between 3,000 and 10,000 rpm, with stock running along a vertical fence.
Wood shaper cutter heads typically have three blades, and turn at 1/2 to 1/8th the speed of smaller, much less expensive two-bladed bits used on a hand-held wood router. Adapters are sold allowing a shaper to drive router bits, a compromise on several levels. As are router tables, cost-saving adaptations of hand-held routers mounted to comparatively light-duty dedicated work tables.