Meet the Strong Hand TheThird hand Universal C-Clamp—the ultimate hands-free helper for precision you can feel. Built for welding, grinding, sanding, and painting, this fully articulated, modular clamp keeps your stock exactly where you need it while you work, so you can focus on the task, not on balancing Parts.

Positioning flexibility is the core of TheThird hand. Its multi-axis joints let you angle and orient your workpiece from virtually any direction. A secure ball-joint adjustment locks firmly in place, delivering repeatable accuracy through long sessions and intricate setups alike.

• Fully articulated, modular design for multi-directional positioning
• Ball-joint adjustment with locking to maintain your chosen angle and height
• Universal clamp base that mounts on flat or square surfaces, angle iron, and 25 mm round posts
• Clamp opening up to 50 mm to accommodate a wide range of stock and workpieces
• Model HAS42 from Strong Hand—a trusted name in shop fixtures and workholding solutions

Why it matters: traditional clamps can limit access or require awkward work setups. TheThird hand eliminates those bottlenecks by holding your piece at the exact orientation you need, enabling cleaner welds, steadier grinds, more even finishes, and faster workflows. It’s especially valuable when working in cramped spaces or on angled surfaces where a fixed clamp falls short.

This tool is ideal for metalworkers, fabricators, hobbyists, and DIY enthusiasts who demand stable, repeatable positioning without sacrificing maneuverability. Use it to fixture parts for tack welding, set up bevels for precision grinding, support delicate finishes during paint or powder-coat work, or assemble complex assemblies where hands-free steadiness makes the difference.

Designed to integrate with common shop setups, TheThird hand supports a variety of mounting scenarios without forcing you to change your rig. Its versatile base works with flat benches, square profiles, angle iron frames, and 25 mm posts, expanding where and how you clamp—yet it remains compact enough to fit into tight work zones. The 50 mm throat opening covers a broad range of stock, providing dependable clamping force without crowding your workflow.

Pro tips for peak performance: keep the joints clean and lightly lubricated for smooth movement; when you’ve found the perfect pose, snug the lock to preserve your setup; if you notice wobble, re-seat on a flat surface or adjust the base alignment to minimize play and maximize rigidity.