Abstract: Systems and methods for multi-level closed loop control of haptic effects are disclosed. One illustrative system for multi-level closed loop control of haptic effects includes a haptic output device configured to output a haptic effect, a sensor configured to sense the output of the haptic output device and generate a sensor signal, and a processor in communication with the sensor. The processor is configured to: receive a reference signal, receive the sensor signal, determine an error based at least in part on the reference signal and the sensor signal, generate a haptic signal based at least in part on the reference signal and the error, and transmit the haptic signal to a haptic output device configured to output a haptic effect based on the haptic signal.

Abstract: Tapered, stepped, or non-tapered router guide templates, and optionally combined template holder system, 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.

Abstract: The quick change faucet and sink assembly is a sink. The quick change faucet and sink assembly is configured for use with one or more faucets. The quick change faucet and sink assembly comprises a sink, a mounting plate, first lap joint, and a second lap joint. The first lap joint and the second lap joint attach the mounting plate to the sink. The quick change faucet and sink assembly works as follows: the one or more faucets are installed in the mounting plate and then the mounting plate is attached to the sink. The one or more faucets can then be attached to the appropriate lines to provide water to the sink.

Abstract: Floor panels are shown, which are provided with a mechanical locking system including tongue and grooves provided with protrusions and cavities which are displaceable in relation to each other and configured such that the protrusions can obtain a vertically unlocked position where they match the cavities and a vertically locked position where the protrusions overlap each other.

Abstract: A pergola structure (10), comprising: at least one horizontal rafter (28), comprising a plurality of tilted notches (22) at the top (32) thereof; and a plurality of parallel horizontal purlins (34), each inserted into the tilted notches (22) from above, thereby each of the purlins (34) is disposed at two sides (12A, 12B) of the rafter (28), providing a firm roof, while allowing flow of air and light therethrough.

Abstract: A system positions a workpiece with respect to a router bit. The system may include a router for routing out a part of the workpiece, a router table for supporting the workpiece, a router fence arranged and constructed to position the workpiece relative to the router during machining, and a positioning device arranged and constructed to position the router fence relative to the router before machining the workpiece, wherein the router comprises a router collet positioned beneath the router table, the router collet being constructed and arranged to engage a router bit extending through an opening in the router table for machining the piece.

Abstract: A workbench system in one embodiment includes a first and a second plurality of dog holes in a planar work surface defining a first and a second axis extending in the work surface plane, and a plurality of cutting guides, each of the plurality of cutting guides including a body defining a first securing portion on a first side of the body and a second securing portion on a second side of the body opposite to the first side, a first stem extending downwardly away from the body and configured to fit into one of the first plurality of holes, and a guide member defining a guide plane which intersects the first axis and the second axis.

Abstract: A guide for a machine tool or tool drive (7) means for moving a surfacing tool over the substantial surface of a work piece (1), said guide comprising a guide means adapted for positioning over said work piece, said guide means including two horizontal spaced apart guide rails (2) and a gantry (3) adapted for linear travel in an X-axis along said guide rails wherein said gantry includes a gantry rail (4) adapted to bridge said spaced apart guide rails, a pair of gantry arms (5) fitted to either end of said gantry rail each gantry arm having a gantry foot for co-operating with said guide rail wherein said tool drive (7) is fitted to said gantry by a gantry mount adapted for lateral movement along the length of said gantry Y-axis, said mount including a vertical Z-axis height adjustment face plate (9) for mounting said tool drive wherein the fitting of said gantry rail to said guide rails is adjustable about said X-axis and the fitting of said tool drive to said gantry mount is adjustable about said Y-axis such

Abstract: The present invention is directed to a system and method for forming an arched top door facing, and the resulting facing. The system includes a panel, a table and a cutting assembly. The panel has a first surface intended to be interiorly disposed and a second surface intended to be exteriorly disposed. At least one boss extends from the first surface. The table has a planar surface and a locator extending outwardly from the planar surface. The locator cooperates with the boss to locate the panel on the planar surface. The cutter assembly is operatively associated with the table, and includes a blade spaced from the locator. The blade engages the panel and forms a curved edge in the panel when one of the blade and the panel is rotated about the locator.

Abstract: Disclosed is a method and apparatus finishing the surface of a wood piece to appear rough hewn. The apparatus comprises a hand planer having a longitudinal direction, a rotatable cutter head having at least one planning blade and a bottom surface. The bottom surface has a convex curved profile longitudinally along the hand planer. The cutter head extends below the curved profile of the bottom surface. The method comprises simultaneously translating and rocking the hand planer on the bottom surface so as to intermittently engage the cutter head against a surface so as to form a plurality of spaced apart divots therein.

Abstract: A removable surface positioning guide for a rotary hand-held tool provides one or more adjustable features for selective positioning of a surface engaging bit driven by the rotary hand-held tool. The surface positioning guide may include a pivot joint between a guide base and a mounting adapter. The guide base pivots relative to the mounting adapter about the pivot joint between operable positions. The surface positioning guide may include at least one spring supported by the mounting adapter either directly or indirectly that biases a guide base axially away from the mounting adapter. The guide base is movable toward the mounting adapter against the biasing of the at least one spring to effect a plunging movement. The surface positioning guide may include a reversible or interchangeable base flange with differently configured faces that are adapted to be placed against a working surface.

Abstract: A table with a working surface has a parallel rail on each side of the working surface. A slide assembly includes a shaft with ends and a pair of brackets. Each bracket has a hole. The holes receive the ends of the shaft. The slide assembly includes cylindrical tunnels. The tunnels slidably receive the rails. An operating assembly has primary and secondary arms. Each arm has a free exterior end and an interior portion. The interior portion is coupled to the shaft. A router is secured to, and depends from, the free end of the secondary arm. Control mechanisms include a scribe. The scribe is secured to, and depends from, the free end of the primary arm. Movement of the primary arm and scribe with respect to a template will cause corresponding movement of the secondary arm and router with respect to work pieces to be routed.

Abstract: The present invention is an attachment fixture that is used in conjunction with a single-pass radius molding system to manufacture elliptical arches. The attachment fixture includes a vertical beam, a horizontal self-centering rack mounted at top end of the vertical beam, a swivel base attached at bottom end of the vertical beam, and a holding clamp attached to the swivel base.

Abstract: The present invention is an attachment fixture that is used in conjunction with a single-pass radius molding system to manufacture elliptical arches. The attachment fixture includes a vertical beam, a horizontal self-centering rack mounted at top end of the vertical beam, a swivel base attached at bottom end of the vertical beam, and a holding clamp attached to the swivel base.

Abstract: A tool for positioning a plurality of templates with respect to a curved rail includes a flexible spine that carries a plurality of templates. Each of the templates defines an opening adapted to guide a cutting tool to form a picket hole in the rail. The templates are evenly spaced along the longitudinal direction of the flexible spine so that the picket holes are evenly spaced when cut. A clamp may be associated with each template to hold the tool with respect to the rail.

Abstract: In a guide device for cutting a groove of this invention, a rectilinear guide member comprises a pair of guide members where the opening width between the guide members for an initial cut is set to be the same as the diameter of a router bit by inserting a pair of inserts between the guide members. A dado having a width that is the same as the thickness of a shelf board to be used is then formed by operating the router with a scrap piece of that board inserted between the guide members. A variety of inserts having various widths corresponding to popular router bit diameters may also be used.

Abstract: An apparatus includes a structure supporting a circular blade, a carriage on the structure for linear movement relative to the blade, and a lathe mounted on the carriage, the lathe rotatably supporting a workpiece in proximity to the blade. In one aspect, the support structure is pivotally connected to the carriage to allow pivoting of the lathe between an orientation for engagement of the workpiece with the blade and an orientation in which the workpiece is supported remote from the blade to facilitate operations on the workpiece with a tool implement other than the blade. In another aspect, the support plate is moveable with respect to the carriage in a direction orthogonal to a line parallel with the direction of allowed movement of the carriage relative to the frame, and a pattern plate is mounted to the support plate to control workpiece depth of cut.

Abstract: The invention relates to an electric hand tool (6) with an electric motor contained in a housing, which drives a chip-removing tool (8). The mounting section (14) of a mounting rail (1) is mounted in a detent locking fashion onto the mounting base (3) of the electric hand tool (6). A carriage-shaped component equipped with a compass point (12) is mounted onto this mounting rail (1) and/or a parallel fence (9, 10) can be adjustably positioned on it.

Abstract: First and second guide plates are engaged for linear sliding between them by a channel and rib engagement system. A grooving tool is carried by the plate associated with the rib, and the rib is in axial alignment with the tool head, such that the tool head can lead the rib. When a groove is being cut into a workpiece, the rib can follow the tool head into the cut groove to extend the range of the guide. Ribs of different size can be selected to coordinate with the tool and groove width. Filler strips similarly coordinate the channel width. An alternate or supplemental guide system joins the first plate to a series of accordion style hinged and foldable plates. These plates guide the first plate in linear movement as they fold or unfold.

Abstract: The invention is for a method for removing at least a portion of a floorboard from a plurality of floorboards installed on a surface base. The method comprises isolating the floorboard or portion thereof for removal and removing a central portion of the isolated floorboard so as to leave a pair of elongate lateral strips, a pair of end portions and a substantially central open space. A routing bit having a shaft and a blade portion is then located such that the blade portion is parallel to, and cuts in, the same plane as the surface base on which the floorboard is installed. The blade is placed beneath the lateral strips and/or end portions so as to remove all material between a lower surface of the floorboard and the base upon which it is installed. The invention is also for a routing bit for removing a floorboard from the base upon which it is mounted.

Abstract: A radial overarm router is disclosed. The radial overarm router includes a machine base with a work surface, a vertical column, a bearing housing, a slide assembly, and a carriage subassembly. The bearing housing is mounted to, and may rotate about, the vertical column. The slide assembly mounts to the bearing housing and in combination with the bearing housing, the slide assembly has translational and rotational motion relative to the column. The slide assembly includes a carriage subassembly that houses a router. The carriage subassembly is configured to allow pivotal and vertical or plunge type motion of the router. The carriage subassembly further provides for transverse movement of the router. Locking knobs and adjustable limit stops are provided for all directions of movement.

Abstract: A cabinetmaking system having a framing table including opposed fences on each side and a series of adjustably positionable clamps. One of the fences includes a removable central section for maneuvering a cutting tool therethrough. The clamps each include an eccentric cam rotating about a single bolt for securing workpieces along with pressure blocks for edge routing, making glue cuts, forming “biscuit cuts” in the ends and sides for tongue and groove joints, cutting decorative bevels, etc. The system further includes a panel table for clamping cabinet side and rear panels thereto for routing edge and surface grooves for joining the panel together.

Abstract: The mounting plate includes an upper panel having an aperture for receipt of the cutting implement of a power tool such as a bit or a saw. The panel is adapted to be received in the opening for an insert formed in the work bench where its upper surface is flush with the working surface of the bench. A sub-panel is attached to the lower surface of the upper panel and has a number of slots for receipt of screws for inter-connecting the sub-panel and the mounting ring or base of the power tool. The screws do not extend to the upper surface of the upper panel where they would interfere with the operation of the power tool. The mounting plate has one or more anchor brackets for interconnecting the sub-panel to the upper panel so that the sub-panel does not rotate relative to the upper panel. The mounting plate may be connected to the base of a power tool having a wide variation of hole patterns.

Abstract: An apparatus to support a hand held motorized tool in an inverted position that allows easy removal of the tool for hand held purposes. The apparatus is defined by a receiver in a frame and an opening for removal of the tool. A lid may further stabilize the tool. When mounted in the receiver the lateral and upper movement of the tool is restricted. When removed from the receiver the tool has attached to it only a sub base-plate that is comparable in size to the tool. The receiver may be removable or built into a tabletop.

Abstract: An attachable baseplate for a highspeed router which can be used with router in an upright handheld position, or in an inverted position with router suspended by same baseplate in a router table. Front edge of baseplate has cutout portion for sliding engagement and containment of a right and a left incrementally marked alignment indicator. When secured to baseplate in a predetermined position indicators show actual diameter margins of the installed cutting tool. This simplifies and makes precise the alignment of the cutting tool to the layout line of the workpiece and allowing measuring capabilities when enlarging the existing cut without the necessity of changing cutting tool. Alignment and measuring capabilities perform equally in the handheld or suspended router table mode.

Abstract: A support mechanism for a router comprises a plate having top and bottom sides and an opening therethrough, and a carriage supported in suspension beneath the plate for supporting a router coaxial with the opening. A pair of guide posts slidably support the carriage for axial displacement toward and away from the plate, and a pair of adjusting screws which are rotatable relative to said plate interengage with the carriage for rotation of the screws to displace said carriage relative to the plate. Each of said guide posts has a post axis and each of the adjusting screws has a screw axis, the axes of the posts, and adjusting screws are coplanar with one another and with the opening axis. The adjusting screws are rotated simultaneously by a sprocket wheel and sprocket chain drive train on the bottom side of the plate.

Abstract: An apparatus for producing an essentially wedge-shaped wood flake comprises a chipping tool rotating about a first, horizontal axis for chipping the flake out of the wood such that the flake has a first, concave surface and a second, convex surface. The flake is delimited between the surfaces. A circular saw blade is provided rotating about a second, vertical axis for removing wood in an area in which the surfaces intersect in an imaginary tip, prior to the chipping out.

Abstract: The invention provides a woodworking duplicator which is adapted to be attached to a standard radial arm saw. The device allows a rotating cutting tool and a stylus to be movably supported allowing the user to trace a pattern with the stylus while cutting the pattern into a work piece with the cutter. The invention provides a duplicator that may be mounted to a radial arm saw wherein the duplicator includes elements that may be moved in five different directions. The invention also provides a duplicator having a stylus and a cutter that may be easily locked into different parallel positions so that the user of the duplicator may more easily trace the item being duplicated. The invention also provides a duplicator that supports the weight of the stylus and cutter tool.

Abstract: A molding system to form a decorative use in a single pass and having a horizontal profile cutter, a first vertical cutter disposed adjacent an end of the horizontal cutter, a second vertical cutter secured to a hinged door by means of an extension, and the extension partially disposed in a recess formed on the adjacent end of the horizontal cutter.

Abstract: A work station is provided having a work surface. The work surface comprises spaced apart bearers (42) which are spaced apart and parallel. The bearers (42) are interconnected by braces (43) and intermediate bearer fits between the parallel bearers (42). In some embodiments of the invention, the intermediate bearer carrier a mitre guide (143).

Abstract: A lifter bore groover tool having a housing in an essentially rectilinear configuration which has an upper wall and a lower wall and a plurality of side walls. The side walls include a cutting wall and another wall and facing walls there between. A bore is formed in the housing adjacent to the cutting wall. A long cylindrical chamber beneath the bore is in communication with a guide slot extending through the cutting wall. A cylindrical cutting block is axially reciprocable within the long cylindrical chamber. A cutting tool is removably supported in the cutting block extending laterally through the guide slot for contacting the surface of the bore to be grooved. The cutting block and cutting tool are axially adjustable. A bolt is received within the bore. The bolt has an upper end with a head for rotation by the user.

Abstract: A coping jig for guiding a router in cutting the end of a section of decorative trim, preferably for creating an inside corner. The coping jig includes a stationary molding stage that receives a section of molding to be cut. A template platform is mounted above the molding stage by a plurality of resilient mounting members. The resilient mounting members allow the angle of the template platform to change relative to the molding stage. The template platform includes at least one template having a trim pattern formed on an edge surface of the template. The trim pattern is used to guide the router in cutting the molding positioned between the template and the molding stage.

Abstract: A portable device for cutting stand grooves in the trunk of a cut tree, including a frame, a pair of wheels rotatably secured to one end of the frame, and a hitch fixed to the other end of the frame. A support at the frame one end includes a first trunk support with two support surfaces downwardly tapered together to an intersection to define a notch therebetween for supporting a cut end of a cut tree trunk and a cutting element for cutting stand grooves in a trunk of a supported tree. A horizontal track on the frame extends toward and away from the frame one end support. An upright support member is selectively movable along a track on the frame toward and away from the first trunk support, and secures a second trunk support above the frame for supporting another portion of a cut tree trunk spaced from the cut tree trunk cut end.

Abstract: An inexpensive jig for holding a piece of crown molding, and guiding a hand-held jigsaw at a particular angle to aid in coping the molding. The jig has a horizontal base plate 1 and two vertical side fences 2A, 2B. A guide plate 3 is attached between the front ends of the fences, and is spaced from the base plate by a gap 5. The guide plate is oriented as if rotated through two particular angles about two respective axes from a position normal to the fences and base plate. The resulting front surface of the guide plate guides a jigsaw in the coping process. An opening 4 in the guide plate is aligned with the upper surface of the base plate, and allows molding to be placed on the base plate with an end in the opening to interfere with the jigsaw blade at a desired coping angle. First, the molding is placed inverted against a miter saw fence, and an end of the molding is cut at a 45-degree angle. Next the molding is placed in the jig, with the cut end in the opening of the guide plate.

Abstract: A material support tool used for routers for allowing pieces of wood to be cut accurately and safely. The material support tool used for routers includes a base member having a hole centrally disposed therethrough and being adapted to receive a router bit therethrough; and also includes a first material support assembly being mounted upon a top of the base member; and further includes a second material support assembly also being mounted upon the top of the base member and being spaced from the first material support assembly, and in combination with the first material support assembly being adapted to support a piece of wood therebetween.

Abstract: The invention relates to a slotless router base plate used for mounting routers by a majority of manufacturers to a router table. A router is attached to a baseplate, and then this router-baseplate assembly is attached to a router table. Numerous hole grouping patterns are provided to accommodate various routers, eliminating the need for users of the baseplate to create holes for specific router models themselves. Slots in the router baseplate are avoided to provide for greater strength and stability in the mounting. An alternative embodiment includes providing a labeling for the hole groups. The router baseplate may be round, but alternative shapes are provided, including providing the hole pattern directly in the router table.

Abstract: A jig apparatus that allows one to cut arches in a work piece quickly and efficiently. It is comprised of a bar that has sliding adjustable clamps that secure a cable which go around pulleys on a router or other cutting device that when the cable is pulled taut, creates a path for the router or other cutting device to follow while it cuts thus cutting an arch into the work piece. Prior to this apparatus one would have to cut this arch with a template which had been previously tooled. This jig apparatus creates a template and cut all in one step.

Abstract: A multipurpose, portable fixture for hand held woodworking power tools is described. The portable fixture of the present invention allows for controlled multidirectional operations with the woodworking tools on a workpiece. The woodworking tool may be tipped, rotated and linearly displace through multiple planes, thereby allowing complex operations on the workpiece. A variety of woodworking tools may be mounted to the portable fixture of the present invention to perform a variety of operations on the workpiece.

Abstract: A router bit for forming the edges of a raised door panel which includes a rotatable drive shaft, a profile cutter fixed to the drive shaft, and a back cutter fixed to the drive shaft for rotation therewith. A cylindrically-shaped pilot member is disposed intermediate the profile cutter and the back cutter. The pilot member is fixed to the drive shaft for rotation therewith and the exterior surface of the pilot member is coated with a friction-reducing material to reduce or eliminate any significant friction between the exterior surface of the rotating pilot member and the raised door panel.

Abstract: A jig for use in conjunction with a router to cut circular openings is disclosed herein. The circular jig is comprised of a plate that has an escape hole for receiving a bit of the router therethrough, and a plurality of pivot holes formed therein. The plate has a reference point, and the pivot holes are arranged on the plate in a nonlinear array at preselected locations with respect to the reference point. A pivot pin inserted into the proper pivot hole allows the jig and router to be pivoted around the pivot pin and cut a circle of a preselected size.

Abstract: A programmable furniture texturing robotic system includes a programmable multiaxis robot fixed to a support frame and a table fixed to a support frame such that they form an integrated unit and the programmable multiaxis robot has a furniture texturing tool unit attached to the end of the robot arm. The furniture texturing tool unit is attachable to and detachable from the arm of the robot and is either a furniture chattering tool unit or a furniture distressing multitool turret. The furniture chattering tool unit has a circular saw blade which produces surface chatter marks when it is dragged across the surface of a furniture part. The furniture distressing tool unit has a plurality of furniture distressing tools, each of which produce a plurality of furniture distress marks including simulated wood rot, worm holes, hatchet marks, rock marks, wood split marks, crooked vein lines, and cigarette burn marks.

Abstract: A jig facilitates the construction of joints in a working piece, and, more particularly, secures the working piece to be cut and allows it to be passed over a fixed router without sacrificing any of the ease of use or quality associated with prior art jigs and templates. The jig also can be secured to a work surface and used with a hand-held router.

Abstract: A base plate for mounting a router in a support table provides a plate configured to fit in an orifice, having an inwardly extending ledge thereabout, defined in the support table with the router supported by the base plate to depend therefrom. The base plate defines a medial orifice for passage of the router shaft through the orifice for operative positioning of a cutter carried on the router shaft above the base plate. The base plate medial orifice releasably carries plural annular inserts to cover space between the router shaft and the support plate portion defining the medial orifice. Plural adjustment screws are carried in threaded engagement in the ledge of the support surface orifice for vertical motion to adjustably move adjacent portions of the base plate periphery upwardly from the ledge to create a coplanar relationship of adjacent portions of the base plate and support table.

Abstract: An apparatus for positioning and mounting sinks to the underside of solid polymer countertops has a framework assembly consisting of a front rail (14) comprising an aligning channel (16), rail assembly brackets (26) and a centering graph (20); side rails (18) comprising template mounting ledges (22, 24) and turn-button attachment means (60); a rear rail (46) comprising mounting ledges (22, 24) and rail assembly brackets (26). A sink positioning/hold-down template (38) comprising a sink positioning opening (42), a clearance opening for faucet hole routing (40), sink hold-down clamp assemblies (44), and notches (50) for positioning permanent sink clamps, is mounted on ledge (22) by means of turn-buttons (60). A sink opening router template (36) comprising a router guide opening for sink (48), an opening for a faucet router template (52), and a faucet router template (32) with router guide openings for a faucet (58), is attached to framework assembly by means of pawl latches (30).

Abstract: A woodworking station is provided, in which cutting heads and cutting bits, e.g. routers, small-bodied rotary tools, plunge routers, and others, are either permanently or interchangeably positioned with respect to a tiltable and rotatable cutting table, such that the operator's hands are free to manipulate the wood being worked. The cutting heads can be raised and lowered by hand controls, or by a foot-controlled electric motor. Self-contained blowers are also included, providing for continuous and simultaneous sawdust removal. Directional lighting is also provided which directs light primarily to the cutting table and away from the operator's face.

Abstract: The present invention is a jig system for precisely positioning the placement of multiple cuts such as in the placement of dovetail or box joints cut in a wood panel. A row of multi-use adjustable spacers controls the indexing of a workpiece and can be used with a stationary and/or a portable cutting tool. The movability of the spacers permits a workpiece to be cut on both sides of a guide bar fence thereby assuring that the first cut will always be made on the same side of a drawer and will be esthetically pleasing regardless of the width of the workpiece. Additionally, the adjustability of the spacers accommodates any desired cutting tool height, angle and/or size.

Abstract: A router guide apparatus for use in forming rosette designs in a work piece includes a frame having a work surface with a wheel rotatably mounted upon the work surface. The wheel has a plurality of position stops. The rosette design can be formed in a synthetic material (eg. Corian®) and filled with a filler or glue or settable material of a different color to form an inlaid design. The frame includes an adjustable guide for holding and a tracking a router with a cutting blade. The frame includes stops for limiting movement of the router during use. The guide and stops are configured to enable the cutting blade to cut two petals of a rosette design in a single pass. Inserts (fence blocks and/or router filler blocks) can be added to vary the position tracked by the router. The wheel is affixable into multiple angular positions relative to the guide so that multiple cuts can be made at different angular orientations relative to one another.

Abstract: Improvements made to a router a relate to a switchable router brake system. The switchable brake system permits a motor brake to be selectably engaged to operate when the router motor is turned off. When engaged, the motor brake, which comprises a brake resistor being placed electrically across the motor windings, causes the router motor to stop rotating almost immediately. This feature, however, is not always desired; the switchable brake system permits the operator to engage the use of the brake only when desired, thus providing the option to selectively eliminate jerking caused electric brake torque induced in the router when the brake engages.

Abstract: A rotatable cutter head comprising an inner hub having a centrally-disposed bore therethrough and an outer surface for carrying at least one cutter plate concentrically thereon for rotation therewith, an outer hub having a centrally-disposed bore therethrough and an outer surface for carrying at least one cutter plate thereon for rotation therewith. The bore of the outer hub is adapted for receiving the inner hub concentrically therein for rotation therewith. An outer pressure-expansible sleeve is provided for being concentrically-mounted within the bore of said outer hub and pressurized for locking the outer hub onto the inner hub. An inner pressure-expansible sleeve is concentrically-positioned in the bore of the inner hub and pressurized for locking the inner hub onto a rotatable spindle, whereby the inner hub and outer hub and the respective cutter plates mounted thereon are locked in fixed, concentric relation relative to each other and to the rotatable spindle.

Abstract: A router guide is disclosed which is used to cut grooves of varying widths with a router bit of fixed size. The router guide comprises a base plate, having a guide edge, a depression, and a first hole; and a rotating plate, set into the depression in the base plate, that rotates along a central axis of the first hole, having a second hole located substantially over the first hole, but having a center offset by a distance, wherein the first hole is always larger than the second hole.