Abstract: A method of forming a cut path that includes the steps of selecting a first image line and a second closed image line surrounding an enclosed area, Overlying the second closed image line on the first image line and identifying a pair of intersections between the first image line and the second closed image line, and making a determination to turn one of right or left at both of the intersections of the pair of intersections to add portions of the second closed image line lying between the intersections with portions of the first image line to form a cut-path.

Abstract: A method of forming a cut path that includes the steps of selecting a first image line and a second closed image line surrounding an enclosed area, Overlying the second closed image line on the first image line and identifying a pair of intersections between the first image line and the second closed image line, and making a determination to turn one of right or left at both of the intersections of the pair of intersections to add portions of the second closed image line lying between the intersections with portions of the first image line to form a cut-path.

Abstract: A cutting system is disclosed for a plasma cutting torch movable by a driver relative to a work piece along a Z-axis. During cutting, the torch provides an arc voltage proportional to a distance between the torch and the work piece. A height control feedback circuit is connected to the torch and includes sensor circuitry providing an electrical signal proportional to the arc voltage and an analog-to-digital converter for converting the proportional signal to a digital signal. A computer and controller, including controls for selecting a desired height of the plasma torch, receive the digital signal, compare the actual height to the desired height, and actuate the driver to move the torch to within a preset limit of the desired height.

Abstract: A cutting system including a gantry mounted to a platform, reciprocally movable above a support surface horizontally along a y axis. A carriage is mounted to the gantry for reciprocal movement thereon along an x axis, generally perpendicular to the y axis. A support is carried by the carriage and movable between a lowered position and a raised position. A holder is pivotally coupled to the support and movable between a first position and a second position relative the support. A sensor mechanism detects the holder in the second position and actuates the drive mechanism to move the support until the holder returns to the first position, and an attachment assembly is carried by the holder for removably attaching a cutting device to the holder.