Coping (joinery)

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A coped joint
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A coped joint

Coping is the woodworking technique of shaping the end of a moulding or frame component to fit the contours of an abutting member.

Coping is commonly used in the fitting of skirting and other mouldings in a room. It allows for clean joints between intersecting members when walls are not square to each other. The other method of fitting these mouldings that is commonly used is the mitre joint but this technique relies upon the walls being at 90° to each other for neat results. Coping is only ever used for internal corners. External corners are always mitred.

Coping is also commonly used in cabinet making for mouldings and frame components. The rails in frame and panel construction are commonly cope cut to fit the profile of the stiles. The technique is also common in the construction of doors and windows.

Traditionally, coping would be performed using a coping saw. There are also mechanical means of producing coped joints, including matching rail and stile cutters for the router as used in frame and panel construction.

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