7-3291 - Thermal Dynamics 1Torch Circle Cutting Attachment Kit

Professional Grade Circle Cutting Attachment

The Thermal Dynamics 7-3291 Circle Cutting Guide Kit is an essential accessory for any welder or fabricator utilizing Thermal Dynamics plasma systems. Freehand circle cutting is notoriously difficult, often resulting in irregular shapes and wasted material. This deluxe kit solves that problem by providing a rigid, adjustable mechanical link between a central pivot point and your plasma torch, ensuring geometric perfection for holes and disks alike. It is specifically engineered to facilitate cutting and beveling operations with high precision.

At the core of this system is the rotating roller guide head. Unlike static guides that can drag or catch, this unit features smooth-rolling wheels with guarded hubs to prevent debris ingress. The head rotates independently of the radius bar, which means you can complete a full circle cut in one continuous motion without the torch cable wrapping around the pivot or the operator. This fluid movement is critical for maintaining constant travel speed, which directly correlates to cut quality and dross minimization.

Technical Specifications and Fitment

This kit is a comprehensive solution packaged with everything needed to adapt to various torch models. It includes a variety of bushings and sleeves to securely mount to SL60 and SL100 torches, as well as older PCH and RPT series models. The adjustable bar supports a cutting diameter range of 2.125" to 27.75". For applications requiring beveling, the magnetic attachment provides the necessary stability to maintain the torch angle throughout the circumference of the cut.

Safety and Durability Features

• Insulated Construction: The main body is crafted from specialized plastic that isolates the metal parts from the electrical current of the arc, preventing accidental shocks or interference.
• Corrosion Resistance: Stainless steel components ensure that the guide remains functional and rust-free, even after exposure to cutting fumes and shop humidity.
• Consistent Standoff: By using the roller guide, the operator maintains a consistent torch-to-work distance (standoff), which extends consumable life and ensures optimal arc performance.

Whether you are running a Cutmaster 52 in a garage or a Cutmaster 152 in a heavy fabrication bay, the 7-3291 Circle Cutting Guide is the reliable choice for repeatable, high-quality circular cuts.