Abstract: A food cutting guide comprising a base for supporting and cutting food, said base having first and second planar surfaces, a peripheral edge, and a plurality of cutting grooves formed in at least one of the planar surfaces to facilitate and guide the movement of a food cutting utensil in cutting the food, and at least one centering guide disposed inwardly from said peripheral edge on at least the planar surfaces having said cutting grooves; wherein said at least one centering guide facilitates the placement of the food in the center of the cutting surface; and wherein said plurality of cutting grooves are equally spaced to facilitate cutting equal size slices of food.

Abstract: A food cutting guide comprising a base for supporting and cutting food, said base having first and second planar surfaces, a peripheral edge, and a plurality of cutting grooves formed in at least one of the planar surfaces to facilitate and guide the movement of a food cutting utensil in cutting the food, and at least one centering guide disposed inwardly from said peripheral edge on at least the planar surfaces having said cutting grooves; wherein said at least one centering guide facilitates the placement of the food in the center of the cutting surface; and wherein said plurality of cutting grooves are equally spaced to facilitate cutting equal size slices of food.

Abstract: Embodiments of the present invention comprise a platform attachment for use with a power hand tool which has a housing with a front nose portion with a rotary output shaft extending therefrom, and a tool holding mechanism on the output shaft for holding a tool, the attachment comprising a mounting component having an opening generally aligned with the output shaft through which a tool can extend, a platform component having a base portion and a platform portion, the base portion being adjustably attached to the mounting component, the platform portion having an outer generally planar main surface that is perpendicular to the axis and having an opening through which a tool can extend, and a generally planar secondary surface that extends downwardly from the main surface at a predetermined angle relative to the axis, and a mechanism for releasably locking the platform component on the mounting component.

Abstract: A food cutting and display tray comprising a tray body with a plurality of V-shaped cutting grooves formed in a first or second planar surface and radiate from a center point; a circular edge that defines the boundary of said planar surfaces; a gripping groove running about the circumference located between about 0.25?-1? from said edge; at least one circular centering groove concentric about the center point; and wherein said gripping groove is in a shape selected from a series of discontinuous arc segments, and a continuous circle; wherein the plurality of cutting grooves guide a cutting tool along the grooves to cut a food item into substantially identical, equally-sized segments; wherein the tray material comprises food safe and/or NSF-approved materials that will withstand temperatures up to about 350° F.; and wherein the plurality of cutting grooves facilitate the emphasis, when displayed, that the slices are of equal size.

Abstract: A chopping board for sashimi on which a block for sashimi can be sliced into pieces with substantially the same size (area) and weight neatly and easily even by those without any experience when the block is cut diagonally is provided. A projecting stripe portion 21 is integrally formed on the top face of a chopping board 20, and angle-setting slits 22, in one of which a blade edge of a knife 1 is inserted, are formed in large number in this projecting stripe portion 21 in the lateral direction of the projecting stripe portion 21 at an interval corresponding to the thickness of one sashimi piece. Inclination of the angle-setting slit 22 on the perpendicular plane is set such that an inclination angle ? with respect to a perpendicular base line 24 sequentially becomes larger and inclines to a head part side 17a as getting closer to a tail side 17b of the block 17 if the block 17 is placed on the top face of the chopping board 20 so as to have the head part side 17a on the right side.

Abstract: A work bench having elevated support members. The work bench may comprise a generally rectangular frame defined by two elongated members and two side members; a support base for supporting the generally rectangular frame in a generally horizontal plane; a plurality of cross members disposed in between the two side members, each of the plurality of cross members being generally parallel to the two side members and being coupled to the two elongated members; and a plurality of raised blocks located on top of each of the two side members and each of the plurality of cross members, wherein the plurality of raised blocks located on each of the two side members are distributed substantially evenly along each of the two side members, and the plurality of raised blocks located on each of the plurality of cross members are distributed substantially evenly along each of the plurality of cross members.

Abstract: A system and method of utilizing a food cutting guide that has a base having a circular first and circular second planar surface. The guide has a plurality of grooves formed in at least one of the planar surfaces and at least one centering guide formed on the at least one of the planar surfaces to facilitate cutting equal size slices and/or sections of food.

Abstract: A method of utilizing a food cutting guide that has a base having a circular first and circular second planar surface. The guide has a plurality of grooves formed in at least one of the planar surfaces and at least one centering guide formed on the at least one of the planar surfaces to facilitate cutting equal size slices and/or sections of food. A wider angled guide groove is formed at the end of each of the plurality of grooves. At least one centering groove/mark is concentric about an intersection of the plurality of grooves to center a pizza or food item. The cutting guide comprises at least one handle.

Abstract: The disclosed embodiments include a rectangular jig tool that has a substantially rectangular body with a square cross-sectional shape, and this able to be held in a vice. The device has a number of features which enable the drilling of aircraft parts. First, the longitudinal slot is used to receive one portion of a part, and allow another portion to extend over a recess in the tool. When the drill passes through the part, it does not damage the tool because the recess accommodates. An optional clip-on feature is also provided which holds the parts in the longitudinal channel so that they are secured during drilling. Other parts are inserted such that they extend out away from a longitudinal slot in the tool for uninterfered drilling. Another features includes a longitudinal corridor/slit arrangement that allows a number of parts to be securely held and stick out from the device for drilling.

Abstract: A device for supporting printer cartridge re-manufacturing work, the device comprising at least one printer cartridge mount, the mount comprising an abutting portion configured to abut to a portion of a printer cartridge cylinder positioned on the mount, the device further comprising a drill hole template connected to the printer cartridge mount, the drill hole template defining a drill hole configured to accommodate a cutting device and to create a printer cartridge cutting pattern for the cutting device.

Abstract: A platform for supporting a sheet material having a workpiece portion to be cut is disclosed. The platform comprises one or more movable supports arranged to support the workpiece portion in a support position. The or each support is movable to a cutting position in which a cutting agent may cut the workpiece adjacent the support position without damaging the support.

Abstract: A portable cradle device is provided and includes a cradle top section and a cradle bottom section, wherein the cradle top section includes a top portion base structure having a first component support structure and a second component support structure, and the cradle bottom section includes a cradle support structure extending downward from the cradle top portion, wherein a portion of the cradle top section is sized relative to the cradle bottom section to form a cradle lip such that when the portable cradle device is associated with a utility bucket, the cradle lip rests on the edge of the utility bucket cavity.

Abstract: A new and improved single tool or jig which is universally useable in connection with the fabrication or trimming of left and right side edge portions of stair tread components, left and right end portions of stair tread side edge plank components, and stair riser components, so as to permit all of such components to be properly mated together in order to impart to the exposed or open stair members a seamless finished appearance.

Abstract: A bagel slicing device for safely and effectively slicing bagels comprises a holder having a slotted base, upwardly extending end portions at each end of the base and side members attached to the base at their lower end and being pivotal about an edge to engage a bagel therebetween and extending between the end portions. The end portions include a knife slot which cooperates with the base slot to permit cutting a bagel completely through. The side members include gripping ribs on both surfaces thereof and the end portions include ribs to locate the bagel properly between the sides.

Abstract: A method for singulating a substrate containing semiconductor components is performed using a nest for holding the substrate, a prestage alignment base for aligning the substrate during a prestage alignment step, and a vacuum cutting base for holding the nest and the substrate during a cutting step. The prestage alignment base includes locator pins configured to engage locator openings on the substrate to align the substrate on the nest. As the cutting base does not include the locator pins, the cutting step can be performed without saw scrap collecting on the locator pins. A system for performing the method includes the nest and the prestage alignment base having the locator pins configured to engage the locator openings on the substrate. The system also includes the sawing base which includes pedestals with vacuum conduits for holding the substrate stationary on the nest for sawing.

Abstract: A workpiece table assembly is configured to hold a plurality of workpieces (e.g. conductive strands) so that the workpieces can be modified (e.g. bent). In one embodiment, the workpiece table assembly advantageously comprises a table, a saddle, a lift mechanism, and a die. The saddle is advantageously recessed below the table and raised or lowered by the lift mechanism. The table advantageously has a top surface with holes adapted to accept quick-release pins from a step-off board. The step-off board also has notches to accept and position the strands for die pressing. In one exemplary operation, the step-off board is used to stagger the strands over the down-positioned saddle. The saddle is then raised by the lift mechanism and the die placed within the saddle on top of the strands. A force is applied to the die to bend the strands.

Abstract: A cutting frame for holding an object to be sliced into two pieces. The object, such as a bagel, has a bottom surface, a peripheral edge, and a top surface. The cutting frame has a base which holds a support stem, which in turn holds a ring shaped guide member. The guide member has a knife blade guide slot extending through it to guide a knife downwardly through the guide member and through a bagel or other object held in the guide member. The process of using the cutting frame includes holding a bagel against a closed side of the compartment formed within the guide member so that the user's fingers press the bagel against the closed surface of the compartment. A knife is then placed in the knife blade guide slot and drawn back and forth downwardly through the bagel to form an accurate slice parallel to the bottom of the bagel. The guide blade knife slot extends completely through the guide member so that the bagel is always cut into two separate pieces.

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 stand having pedestals for providing a support for a pumpkin being carved and/or displayed. The stand also protects an underlying surface from juices and debris discharged from the pumpkin.

Abstract: A workbench having four vice sections 4, 6, 8, 10 which are independently adjustable to provide a gap 32 therebetween in which to clamp a workpiece 30, and a gap 24 therebetween through which a saw can be placed in order to cut through the workpiece . An optional mitre guide 49 can be provided in order to form a guide for the saw, the position of the guide 49 being adjustable to facilitate cuts at different angles through the workpiece 30.

Abstract: The sheet material cutting system includes a cutting board having a reference corner with its two edges at a right angle with respect to each other. Cutting grooves are formed in the cutting board through the top layer thereof to expose a different colored layer for groove visibility. The grooves are positioned at known distances from the reference corner. The reference corner carries stops so that, when a sheet of colored transparent material is placed against the stops, the grooves can be used to guide a knife for cutting a square piece of colored transparent material for use in color frames in stage and similar lighting systems.

Abstract: An architectural millwork jig for the cutting of at least one cope in a strip of architectural millwork such as crown molding. The jig includes a base for stabilizing the millwork and further includes a table with a through opening positionable over the end face to be cut. A powered jig saw rides on the table about the opening, where the powered jig saw includes a foot for riding on the table and a blade reciprocating between two toes of the foot, and where the blade makes the cut in the end face of the millwork. The table is swingable about at least the x and y axes so as to provide a proper alignment for the surface of the table on which the foot of the powered jig saw rides. Swinging of the table about one axis permits one jig to be used for right hand and left hand copes and further permits the table to be adjusted to the exact angle of the right hand cope or to the exact angle of the left hand cope. Swinging about this one axis further permits the table to be swung into position to cope flat miters.

Abstract: A holder for containing items to be sliced is provided. The holder includes a base, a first sidewall having a proximal end fixedly secured to the base and a distal end, and a second sidewall having a proximal end fixedly secured to the base and a distal end. The sidewalls have a normal rest position wherein the distal ends are spaced apart a predetermined distance. At least one of the sidewalls is formed of a flexible and resilient material and is deflectable from the rest position in a direction which increases the distance between the distal ends.

Abstract: A bagel holder includes a housing with an open upper end and a bottom wall which arches upwardly in its center. Forward and rearward walls of the housing slant towards one another from their upper edges to their lower edges to form a general wedge shape therebetween. The housing end walls include parallel upper portions and lower portions which slant towards one another as they extend downwardly to their juncture with the bottom wall. Each end wall includes a vertical slot extending downwardly to a lower end spaced above the bottom wall at a point which is a vertical distance approximately the same as the vertical distance to which the bottom wall is arched upwardly. Each end wall includes a thickened portion forming a buttress pad at the lower end of the slots and formed integrally with the end walls.

Abstract: A food slicing device that holds food, particularly bread, in place while slicing. The bottom of the bread loaf is pierced to hold the loaf in place while slicing. Adjustment plates provide for varying slice width, or duplicating a slice of standard thickness. Adjustment plates may be stored on the back of the slicer. Grooves guide the knife when cutting bread. Cutting channels insure a cut completely through the item being sliced. A removable insert allows the top of the cutting platform to be replaced when it becomes abraded or damaged. The device is easily made by the home craftsman or can be mass produced.

Abstract: A miter box assembly includes a miter box having a flat base and upwardly projecting side walls with slots in the side walls for receiving a saw blade. The miter box includes a forwardly projecting flange with a first aperture therethrough and a rearwardly projecting flange with a second aperture therethrough, the first and second apertures aligned along a central longitudinal axis of the box. A pin depends from the bottom of the box and is located along the longitudinal axis of the box and preferably spaced farther from the first aperture than from the second aperture. A base plate having first and second perpendicular axes ascribed on the upper surface thereof includes a plurality of pivot apertures aligned along the second axis for pivotally receiving the pivot pin on the bottom of the miter box.

Abstract: A cove base cutting guide provides a stable guide for holding a cove of soft material, such as rubber or synthetic rubber, achieved in a bottom, top, ends and front and back sides with a cove-shaped chamber within, the integrity of the guide breached only by fully-contained slits on the front side within the front side and by a narrow opening the size and shape of a cove base in the ends for receiving and discharging a cove end piece cut from cove stock in the guide. To maintain the knife in alignment within the slit, the guide includes a chamber groove opposite each slit into which the end of the knife passes. The front slitted side is thin such that a conventional utility knife of length typically only about 1-inch reaches from the front side through the chamber into the guide grooves. In an alternative embodiment, a stabilizing block is attached to the guide back side to maintain guide structural stability when the chamber grooves are extended as slits through the guide back side and stabilizing block.

Abstract: A cutting table is disclosed which can be used to cut workpieces such as banners. The device comprises a hard-surfaced vacuum table, with a rectangular grid pattern of cutting grooves. One or more raised measuring guides allow quick and accurate alignment and measurement of workpieces. The device is designed for expansion by connection to one or more additional banner tables.

Abstract: An improved bagel holder is disclosed that includes a rigid base and a pair of upstanding vertical sidewalls attached to the base. A first sidewall is attached such that there is no movement of the wall. A second wall is attached to the base by a piece of resilient material such as nylon such that the second wall is movable toward the first wall. A cavity is defined between the inner surface of each of the two walls. The cavity is operable to hold a bagel therewithin. The inner surfaces of the two walls have depressions and protrusions formed thereon to better hold the bagel therewithin. The movable wall has a slot formed therein beginning at the top surface of the wall and extending down a predetermined distance. The slot facilitates the removal of a bagel from the cavity by inserting the tip of a knife through the slot and through the center hole of a bagel and moving the knife upward, thereby also moving the bagel upward and out of the cavity.

Abstract: An apparatus for trimming three-dimensional workpieces made, e.g., of plastic comprises a bottom platen for supporting the workpieces and a cutter, which is movable relative to the bottom platen along a line of cut. To permit an automatic trimming by means of an inserted-tooth cutter, the bottom platen extends across the line of cut to support also that portion of the workpiece which is to be trimmed off. The bottom platen has a top surface for supporting the workpiece and is formed with a groove extending along the line of cut.

Abstract: The professional or do-it-yourself person, i.e. woodworker or metalworker, while working on wood and/or metal projects, has a handy tool for cutting production sandpaper and emery paper, supplied commerically in sheets of approximately nine by eleven inches, and for storing both new sandpaper sheets and still usable used sandpaper sheets or emery sheets, keeping them in a ready supply of flattened sandpaper or emery sheets, avoiding any curling of the new or used sandpaper or emery sheets. This tool is a container having a top and bottom with a 180 degree opening hinge along one common side, with all the other common sides, when closed, contacting one another, to complete the full enclosure of this tool for the convenient carrying and storing thereof, while keeping the sandpaper and/or emery paper flattened.

Abstract: An apparatus for the cutting of food includes a uniquely-shaped cavity for positioning and retaining food articles of varying size and a pair of slots for guiding a cutting implement.

Abstract: A knock-down type workbench including a three piece support structure assembly which may be assembled in rigid form entirely without the use of nails, screws or other fastening means. The knock-down workbench includes a plurality of table tops which have different functions and are interchangeable. The panels of the workbench are interlockingly stressed to create a structurally tight workbench held together by forces created by the interlocking parts. Thus, the workbench may be lifted or severely jolted without fear of it collapsing.

Abstract: An apparatus for the cutting of food includes a uniquely-shaped cavity for positioning and retaining food articles of varying size and a pair of slots for guiding a cutting implement.

Abstract: A work holder for vertical band saws wherein a moving blade is laterally translated through a work table slot. The work holder includes a fixed reference member mounted on the table transversely disposed to the table slot and intersected by the blade. A clamp mounted upon the work table in alignment with the slot bridges the slot and saw blade path of movement holding the workpiece against the reference member permitting firm retention of the workpiece adjacent the blade to permit small pieces to be accurately severed.

Abstract: A workpiece supporting table for panel saws which ensures that during the splitting-up and formatting of workpieces, chip-type sawing residues penetrating between the table and a workpiece placed on it cannot scratch a sensitive workpiece surface resting on the table when the workpiece is moved into a new cutting position, is described. To this end, the workpiece supporting table is in the form of a grooved table whose ridge-type elevations each comprise at least one air outlet channel which exits at their upper horizontal surface and is connected to a compressed air source. Chips penetrating between the workpiece and the ridge-type elevations during the sawing are carried along and pulled down from their upper surface by the air flow issuing from the elevations, once the workpiece is released for adjustment into a new cutting position on the workpiece supporting table.

Abstract: A method and apparatus for joining fittings, particularly wooden stair rail fittings. The apparatus includes a mitre jig and a double slot jig. The mitre jig has a base with a curved bed for supporting the fitting to be cut. A wall is used with the base that has on it a scale for indicating the angle of incline of the stair being worked with. A recess in the wall accommodates a saw and a slot in the wall receives the saw blade. The fitting is placed on the base with its seam aligned with the particular indication for the stair's angle of incline. A saw is then used to cut the fitting. The double slot jig is used to cut slots into the ends of fittings for joining them. The double slot jig has a base, a tray, a double-bladed cutting apparatus, and a frame. The tray supports the fitting to be cut and is movable on the base. Appropriate stops are used to correctly position the fitting on the base and to limit the movement of the tray on the base. A drill with double circular blades can be used.

Abstract: Apparatus for holding and facilitating the cutting of translucent sheet material into predetermined shapes. A transparent plate is placed over a plenum formed by a support frame. A plurality of suction holes are formed through the plate having an enlarged diameter at the upper surface of the plate. Grooves are formed part way through the plate for guiding a cutting instrument. Alignment marks are provided on the surface of the plate for registering printed information on the material with the plate.

Abstract: A workbench construction is disclosed which is easily disassembled for transportation and storage and which is adapted for use in performing a variety of different saw cutting operations. The work bench includes a pair of spaced bench beams which are independently supported on legs and a plurality of spaced elongated main rails which preferably comprise wooden boards which are disposed on edge and which are detachably received in interfitting relation on the bench beams. For performing a saw cutting operation, a member which is to be cut is positioned on the upper edges of the main rails, and the desired cutting line is aligned with the spacing between a pair of adjacent main rails to provide clearance for the saw blade.

Abstract: A plate positioning apparatus which determines the position of a plate workpiece for a processing machine by an aligning member which moves in the X-axis direction and an aligning member which moves in the Y-axis direction. The Y-axis aligning member is provided with a movable retainer which retracts toward the Y-axis side when it comes in contact with the X-axis side aligning member and comprises a base part and an extension member which is remountable on the base part. The aligning member for the X-axis is provided on its upper surface with at least one aligning bar which contacts the plate workpiece. The aligning members for both directions of X and Y axes are adapted to be guided by the base frame and their moving strokes are controlled by position detecting switches provided in the base frame, the base frame being closed at its upper side by the cover plate. The respective slits along which the aligning members move are covered with respective movable dust-proof belts.

Abstract: A chain saw mounting assembly wherein a chain saw is pivotally mounted at the motor housing end, on a support frame, for pivotal movement in the cutting plane of the saw blade. A throttle actuator on the assembly regulates the speed of the cutting chain between idling speed, when the saw is in its inoperative pivoted position, and an accelerated cutting speed when the saw is in its pivoted operating position. The device is adaptable for mounting on a workpiece supporting table.

Abstract: The present invention relates to an apparatus for the slicing of items or products such as croissants and/or sandwich buns to minimize risk of injury and to assure uniform slicing, even with variations in the dimensions of the product. The apparatus comprises a holder for the item to be sliced on a support stand having a fixed surface and a movable cover. A support member spaced between the fixed surface and movable cover supports the item in alignment with a knife or slicer guide so that a user can slice an item such as a roll or croissant uniformly without risk of injury.

Abstract: The seaming tool has elongated upper and lower plates hinged along their long edges to open like a book. The bottom of the lower plate has stops parallel to the hinge. The stops engage the edge of already laid floor covering and the to-be-laid material is positioned between the plates. The free edge of the upper plate now serves as the cutting guide. It is slightly closer to the hinge than the stop means to ensure a slight overlap of the materials to require a tight or force fit at the joint.

Abstract: The invention discloses a sawbuck. The sawbuck comprises a rectangular base, from the base there are upwardly projecting side walls, on two sides there is an outer and inner wall. The distance between the inner and outer walls define an opening, the said opening is for holding slats, the slats are positioned for holding logs, the logs are placed across the facing side walls in between the slats.

Abstract: A packagable workbench comprises work surfaces (1) and (1a) separated by slot (2). A sliding member (22) can be moved lengthwise and locked or unlocked on the work surface (1a) to form a positional stop opposite a pivotable force-applying tool (52). Said sliding member (22) also has exchangable fittings for tightly securing and clamping workpieces when force is applied by the force tool (52). The work surface is supported by legs (3) to which fixtures (7) can be attached for supporting a tool deck (8) and bi-sliding drawers (18) for tools and one end of stay rods (10). The legs (3) also provide vertical posts for mounting adjustable sawhorse supports (64) and plank (61). Further the work surface (1) supports a screw press (68) by tension rods (76) attached thereto for pressure applications in combination or separate. The work surface (1) also provides a fixed stop (19) removably attached to work surface (1) for along-the-bench clamping of workpieces by pressure applied from the force tool (52) when pivoted.

Abstract: A fish holding and cleaning device containing two frame members that are attached to one another by a hinge for folding to a closed carrying position and unfolding to an open, cleaning position. When opened to a cleaning position the ends of the frame members pinch together so that a fish tail can be captured therebetween. The head of a fish so captured can be secured to an outside end of one of the frame members by a hook and a biasing element such as a rubber band. Each frame member has a grooved cleaning surface upon which a fish resides when being cleaned on that side. By using the hook a fish can be moved to and secured to the opposite cleaning surface while its tail remains captured between the frame member ends. Pockets are attached below the frame members for the storage of cleaning tools.

Abstract: A miter block suitable for cutting a mitered end on a strip of material "L" shape in cross-section has a receiving slot extending from edge to edge in an upper surface to receive the strip of material and two cutter guide slots at right angles to one another, the slots having a common intersection with the receiving slot at one of the edges of the upper surface.

Abstract: A fixture having a channel for accepting a user inserted knife blade, a first, floating plate for holding in place one surface of the bagel, roll or muffin to be sliced, and a second, rigid plate for bearing against the opposite surface of the bagel, roll or muffin, and positionally adjustable with respect to the channel for controlling the thickness of the resulting sliced sections.

Abstract: A mitre box includes a base member upon which is detachably secured a corner clamp providing a pair of movable jaw members movable at right angles to each other and relative to cooperating fixed clamp faces on opposite sides of a guide channel therein. The base member has a work support surface which is aligned with the guide channel and coplanar with the support surfaces of the corner clamp. Cooperating locating means are provided on the base member and corner clamp to position the members in predetermined alignment, and releasable fastening means secure the two members in assembly. Also included are a pair of guide posts upon which is slidably carried saw guide means to position an associated saw in alignment with the guide channel in the corner clamp.

Abstract: A miter box comprising a base having a flat top surface and opposed parallel elongated side edges. A pair of spaced apart side walls extend from at least one of the side edges transversely above the flat top surface. The side walls have a flat inner surface to form right angle walls with the flat top surface. A saw blade guide mechanism is provided between the pairs of side walls. The mechanism comprises an arcuate guide means adjacent each of the side edges intermediate the pair of side walls and disposed on a circular axis having a common center point. The guide means have a diametrical pivotal base member pivotally secured on the center point below the flat top surface. Support guide means is secured to the pivotal base member and extends transversely above the flat top surface and displaceable along an arcuate path between each pair of side walls.