Clamping Screwdriver (Stolarzki) Unior 706 reinforced 500 mm

The Clamping Screwdriver (Stolarzki) Unior 706 reinforced 500 mm is a heavy-duty F-clamp designed for woodworking and carpentry tasks that require deep throat reach and reliable holding power. With a 500 mm throat depth and a reinforced frame, this clamp secures workpieces during gluing, assembly and routing operations. The adjustable sliding bar and screw mechanism provide controlled clamping pressure and stable positioning for shop and on-site use.

Advantages

The reinforced frame improves stiffness and reduces deflection under high clamping loads, while the long 500 mm throat depth enables clamping of larger or deeper workpieces. The screw-driven jaw offers fine, incremental pressure adjustment for precise alignment and secure hold. The adjustable sliding bar allows quick repositioning along the beam for various material sizes, and robust construction supports repeated use in demanding woodworking environments.

Suitable for

• Gluing and edge-joining boards
• Holding workpieces during routing and shaping
• Assembly and fixture work in carpentry and joinery
• On-site tasks where a deep-reach clamp is required

Key specifications

• Throat depth: 500 mm
• Clamp type: F-clamp / woodworking clamp
• Frame: reinforced construction for reduced deflection
• Operation: screw-driven jaw with adjustable sliding bar
• Primary use: heavy-duty woodworking and carpentry applications

How to use

Position the clamp so the fixed jaw rests against one side of the workpiece and slide the adjustable jaw to approximate the required opening. Turn the screw handle to advance the jaw until the workpieces are held firmly; apply gradual pressure to avoid misalignment or crushing softer materials. For larger panels, use multiple clamps spaced evenly to maintain uniform pressure across joints. After the operation, back off the screw and slide the adjustable jaw clear to remove the clamp.

Usage recommendations

For best results, protect finished surfaces with thin pads or scrap wood between the clamp jaws and the workpiece. When gluing, allow sufficient clamp time and use several clamps to distribute pressure evenly. Inspect threads and the sliding mechanism periodically and keep them clean and lightly lubricated to ensure smooth operation and long service life.