A portable device for precision plasma and oxy-fuel torch cutting is provided. Versions of an example portable cutting torch tool guide the gun of a cutting torch to make precision linear cuts or curved cuts in a metal workpiece. In an implementation, the device is a gun for a cutting torch, with an integrated rail follower and adjustable vertical and horizontal offsets from a workpiece. The cutting torch tool may use various kinds of rails for stable cuts, with optional movement damping, motorized drive, servos for vertical and horizontal offset, and remote control with user interface.

Disclosed is a portable spot welder. The spot welder includes a control board; a battery connected to the control board; an analog-to-digital converter (ADC) detection module connected to the control board; a power metal oxide semiconductor (MOS) module connected to the battery; an optical-coupler isolation driving module connected to the power MOS module and the control board; a battery protection module connected to the battery and the control board; a power supply module connected to the battery protection module and the control board; and a soldering iron module connected to the battery protection module and provided with spot welding pen interfaces. The spot welder can be connected to an external spot welding pen for use or used as an emergency power bank. A safety coefficient is improved, risks of overheating, overcurrent and a short circuit of a portable spot welder body are reduced, and a size is reduced.

A metal cutting device, including a main body, a plurality of legs pivotally disposed on at least a portion of the main body to suspend the main body over a surface, a handle assembly removably connected to at least a portion of the main body to facilitate gripping thereof, and a torch removably connected within at least a portion of the main body to cut the surface in response to contact with the surface.

A mobile welding cart designed to incorporate and integrate components to lift the welding unit, and to provide power for accessory components and tools, is provided. The cart comprises a base frame, supported by four wheels, connected to a lifting platform by way of a scissor lift mechanism. The lifting platform is operable between an expanded position and a retracted position. A storage compartment is located on the lifting platform and a welder is located on top of the storage compartment. The cart also includes a power box connected directly to the rear of the storage compartment that is designed to receive power from a single extension cord connected to the input power of choice. This power box may provide power to all required components and may be equipped with components to convert the power emanating from a power supply in the power box.

A welding cart with a cable management system may include a frame, a shelf adapted to support a welding machine, a plurality of upright members, a plurality of wheels supporting the cart, one or more pairs of holders disposed on one or more sides of the cart, and a removable bar that may be releasably secured to the one or more pairs of holders. The bar may be releasably secured to the holders via a pin-and-hole mechanism and may have a hook adapated to hold welding equipment such as cables. The bar may be releasably secured to a first pair of holders disposed on a side of the cart or a second pair of holders disposed on another side of the cart. This system provides additional, easily accessible storage space for welding tools and accessories while still being compatible with a wide variety of portable welding machines.

Disclosed is a handle clamp for an exothermic mold. The clamp includes a pair of legs, each having a plurality of rods that are shaped to fit into engagement holes on sections of the mold. The rods of each leg engage with one section of the mold. Engagement brackets are rotatably disposed on one or more or the rods. The brackets each have a thumb bolt that can be extended toward a mold section connected with the clamp. When engaged with the mold section, the thumb bolt stabilizes the mold section on the handle. A detent mechanism is provided between the bracket and the leg of the handle. The detent mechanism releasably holds the bracket in one of a selected plurality of rotational positions with respect to the rod. By selecting different rotational positions for the brackets, the handle can be configured to engage with different configurations of mold. The thumb bolts that are biased toward the mold section by a spring. The bolts include a key that can be aligned or misaligned with a key slot on the bracket. By aligning the key with the key with the key slot, the bolt can be moved toward or away from the mold section under the biasing force of the spring. By misaligning the key and key slot, the bolt can be locked into engagement with the mold section or else held in a disengaged position.

Welding carts with tool-less securing systems are disclosed. In some examples, a welding cart may be configured to retain and/or transport a welding-type power supply. The cart and power supply may have bracket holes configured to receive bracket ends of a securing bracket. The bracket ends may be received by the bracket holes when a shaft retaining the securing bracket is engaged with a rotational lock of the cart. An actuator connected to the shaft may be configured to rotate the shaft to engage the rotational lock. A resilient member may bias the bracket ends out of the bracket holes when the shaft is disengaged from the rotational lock. A captive fastener attached to the shaft may ensure that the shaft and bracket remain captive to the cart even when the shaft is disengaged from the rotational lock and/or the securing bracket is biased away from the cart.

A torch support and guide apparatus for a plasma cutting torch, for assisting a user in beveling workpiece edges and in sectioning workpieces. The apparatus includes a main support body having a base plate and a pair of support arms extending upwardly from the base plate, the arms configured to support a handle therebetween. The base plate has a cutout notch formed therein to accommodate a clamp subassembly which includes a U-shaped swing member and a clamping bracket. The base plate has a substantially rectangular shape, and has a horizontally extending groove formed in an upper surface thereof. The apparatus also includes a fence with a guide portion and a slide arm integrally attached to the guide portion. The slide arm of the fence fits slidably in the groove of the base plate. A kit for constructing the apparatus and a method of using the apparatus are also disclosed.

Disclosed is a handle clamp for an exothermic mold. The clamp includes a pair of legs, each having a plurality of rods that are shaped to fit into engagement holes on sections of the mold. The rods of each leg engage with one section of the mold. Engagement brackets are rotatably disposed on one or more or the rods. The brackets each have a thumb bolt that can be extended toward a mold section connected with the clamp. When engaged with the mold section, the thumb bolt stabilizes the mold section on the handle. A detent mechanism is provided between the bracket and the leg of the handle. The detent mechanism releaseably holds the bracket in one of a selected plurality of rotational positions with respect to the rod. By selecting different rotational positions for the brackets, the handle can be configured to engage with different configurations of mold. The thumb bolts that are biased toward the mold section by a spring. The bolts include a key that can be aligned or misaligned with a key slot on the bracket. By aligning the key with the key with the key slot, the bolt can be moved toward or away from the mold section under the biasing force of the spring. By misaligning the key and key slot, the bolt can be locked into engagement with the mold section or else held in a disengaged position.