Tapered, stepped, or non-tapered router guide templates, optionally combined template holder system, and optional tapered or non-tapered guide bearing on a readily-locatable and lockable shaft, each template comprising: a base portion, a top portion, at least one of an exterior surface interconnecting the base portion and the top portion along an outer periphery of the template and an interior surface interconnecting the base portion and the top portion along an inner periphery of the template, wherein optionally one of the exterior surface and the interior surface may be continuously tapered between the base portion and the top portion, or stepped, and wherein the base portion is adapted for removable and adjustable interconnection with the template holder system.

Tapered, stepped, or non-tapered router guide templates, optionally combined template holder system, and optional tapered or non-tapered guide bearing on a readily-locatable and lockable shaft, each template comprising: a base portion, a top portion, at least one of an exterior surface interconnecting the base portion and the top portion along an outer periphery of the template and an interior surface interconnecting the base portion and the top portion along an inner periphery of the template, wherein optionally one of the exterior surface and the interior surface may be continuously tapered between the base portion and the top portion, or stepped, and wherein the base portion is adapted for removable and adjustable interconnection with the template holder system.

A handheld mortise forming device includes a base unit having a first support extending parallel to a first axis. The first support includes first and second working ends. A first sidewall and a second sidewall are connected to the first support. One of two connecting units is rotatably mounted to the first sidewall. The other connecting unit is rotatably mounted to the second sidewall. A second support extends parallel to the first axis and is connected to the two connecting units. The second support is rotatable relative to the first and second sidewalls and includes an abutting face. A clamping unit includes a pressing member located on a side of the second support adjacent to the abutting face. The pressing member can clamp lumber. The pressing member is jointly rotatable with the second support and is switchable between the first working end and the second working end.

A handheld mortise forming device includes a base unit having a first support extending parallel to a first axis. The first support includes first and second working ends. A first sidewall and a second sidewall are connected to the first support. One of two connecting units is rotatably mounted to the first sidewall. The other connecting unit is rotatably mounted to the second sidewall. A second support extends parallel to the first axis and is connected to the two connecting units. The second support is rotatable relative to the first and second sidewalls and includes an abutting face. A clamping unit includes a pressing member located on a side of the second support adjacent to the abutting face. The pressing member can clamp lumber. The pressing member is jointly rotatable with the second support and is switchable between the first working end and the second working end.

A system and method for constructing a composite structure using a multi-piece tool. The pieces are assembled, including making a connection, such as a mortise-and-tenon connection, between pieces using an adhesive mixed with an induction heatable material, such as iron filings having a unit size of between 5 microns and 600 microns, and an amount of between 5% and 50% by volume. Plies of a material are applied around the connection between the pieces, and the plies are cured to create the composite structure, which results in the pieces being trapped within the composite structure by the connection. The adhesive is exposed to electromagnetic induction from an electromagnetic induction coil which generates heat in the induction heatable material and thereby loosens the connection. The tool can then be disassembled by individually pulling at least some of the pieces from within the composite structure.

A machine for conical machining workpieces of wood and plastics has a support supporting the workpieces during feeding in a transport direction through the machine. Rotatably driven tools are provided to machine longitudinal sides of the workpieces extending in the transport direction. At least one of the rotatably driven tools is adjustable transverse to the transport direction. A tongue and groove guide guides the workpieces through the machine in transport direction. In a method for conical machining workpieces, the workpieces prior to or during feeding are measured in regard to the conicity to be machined. A form-fit element is produced on the workpieces and interacts with a counter form-fit element during feeding of the workpieces so as to guide the workpieces in transport direction. At least one of the rotatably driven tools is adjusted transverse to the transport direction during feeding of the workpieces based on the measured conicity.

A mortise and tenon jig includes a base plate, a router support plate attached to an upper surface of the base plate such that the router support plate includes an opening, and a guide attached to the router support plate. The guide may include a first end and a second end. The first end includes a mortise guide surface, and the second end includes a tenon guide surface. The mortise and tenon jig also includes a first configuration where the mortise guide surface is aligned with the opening and a second configuration where the tenon guide surface is aligned with the opening.

A mortise and tenon jig includes a base plate, a router support plate attached to an upper surface of the base plate such that the router support plate includes an opening, and a guide attached to the router support plate. The guide may include a first end and a second end. The first end includes a mortise guide surface, and the second end includes a tenon guide surface. The mortise and tenon jig also includes a first configuration where the mortise guide surface is aligned with the opening and a second configuration where the tenon guide surface is aligned with the opening.

A dado indexing jig includes a plurality of indexing members and indexing surfaces that are adjustable relative to one another and a cutting element to account for a width of a workpiece that corresponds to the width of a dado to be cut. In addition, the indexing surfaces are adjustable to account for a width of a blade or router to cut a dado.

The present invention provides a jig for fabricating a concave-convex structure. The jig for fabricating a concave-convex structure is coupled to a multipurpose woodworking device including a woodworking work table for performing a plurality of operations for forming a concave-convex structure and a router mounted on the woodworking work table to perform the operations for forming a concave-convex structure, using a plurality of end mills. Furthermore, the jig for fabricating a concave-convex structure includes at least one of a wood piece support jig supporting or fixing a wood piece to be fabricated, a shaping guide jig allowing for forming shapes corresponding to the operations for forming a concave-convex structure, and a stopper jig maintaining X-axial movement of the router by intervals corresponding to the operations for forming a concave-convex structure. Accordingly, it is possible to easily fabricate circular, round, rectangular, dovetailed, and gallery-shaped grooves and joints.