The invention is a method for operating a panel saw of a framework supporting a set of beveled railings, the railings being held in a parallel and spaced apart orientation to one another and to the framework; a carriage having at least two pairs of opposing beveled carriage side edges and at least one tool securing apparatus, one pair of opposing carriage side edges reversibly removably engages the set of railings to movably locate the carriage between the set of railings; wherein the carriage moves in and out of contact with the railings through the top ends of the railings to allow the one pair of carriage side edges to be moved out of contact with the set of railings while alternately allowing the remaining pair to reversibly engage the set of railings in a manner that lets permits the carriage move along the railings in a self-centering manner.

The present application discloses a portable curtain cutter assembly comprising a base and a portable cutter. The base comprises a supporting plate; a side wall; and a slider. The side all is coupled to the supporting plate and comprises a first groove. The slider is slidably coupled to the side wall through the first groove, wherein the slider comprises a slot. The portable cutter comprises a blade, wherein the blade is capable of being inserted partially into the slot. A method or using the aforementioned portable curtain cutter assembly is also disclosed.

The invention is a method for operating a panel saw of a framework supporting a set of beveled railings, the railings being held in a parallel and spaced apart orientation to one another and to the framework; a carriage having at least two pairs of opposing beveled carriage side edges and at least one tool securing apparatus, one pair of opposing carriage side edges reversibly removably engages the set of railings to movably locate the carriage between the set of railings; wherein the carriage moves in and out of contact with the railings through the top ends of the railings to allow the one pair of carriage side edges to be moved out of contact with the set of railings while alternately allowing the remaining pair to reversibly engage the set of railings in a manner that lets permits the carriage move along the railings in a self-centering manner.

A portable saw assembly for use in making square cuts in metal structural components. The portable saw assembly includes a clamping system to hold a work piece in a fixed position with respect to the rotating saw blade and the saw blade is constrained for movement toward and away from the work piece along a specific prescribed path that assures that the saw blade will encounter and then cut the work piece at a right angle with respect to the longitudinal axis of the work piece. Thus, the portable saw assembly can be located on site of the construction and yet can be readily and easily used to cut the structural component along a square cut to facilitate the assembly of the ultimate structure. The clamping system includes clamping inserts to accommodate different sizes and geometric shapes of work pieces while still assuring a square cut thereof.

The present application discloses a portable curtain cutter assembly comprising a base and a portable cutter. The base comprises a supporting plate; a side wall; and a slider. The side all is coupled to the supporting plate and comprises a first groove. The slider is slidably coupled to the side wall through the first groove, wherein the slider comprises a slot. The portable cutter comprises a blade, wherein the blade is capable of being inserted partially into the slot. A method or using the aforementioned portable curtain cutter assembly is also disclosed.

A cutting guide includes a first guide structure and a second guide structure. The first guide structure includes (i) a first base, (ii) a first saw support attached to the first base and defining a first saw contact surface, and (iii) a second saw support attached to the first base and defining a second saw contact surface that is spaced apart from the first saw contact surface so as to define a first elongated cutting slot therebetween. The second guide structure includes (i) a second base, (ii) a third saw support attached to the second base and defining a third saw contact surface, and (iii) a fourth saw support attached to the second base and defining a fourth saw contact surface that is spaced apart from the third saw contact surface so as to define a second elongated cutting slot therebetween.

In some examples, an apparatus includes a base including an arm selectively movable with respect to the base. The arm is selectively rotatable about a first arm axis. A base plate is engaged with the arm. A tool is configured to be detachably coupled to the base plate. The tool is movable with the base plate when coupled to the base plate. The apparatus includes a first mode with the tool coupled to the base plate and the arm being selectively rotatable about the first arm axis, a second mode with the tool coupled to the base plate and the arm being constrained from rotating about the first arm axis, the arm being substantially stationary with respect to the base; and a third mode with the tool detached from the base plate.