Mitre Clamps

Mitre Clamps

Definition: Mitre clamps are specialized clamps designed to hold two pieces of material at a precise 90-degree angle while glue or adhesive sets. They are most commonly used in picture framing and woodworking to secure miter joints during assembly.

Overview

Mitre clamps provide consistent pressure along the joint to prevent slippage and ensure that the corners remain square while adhesives cure. They are essential for achieving clean, precise corners in frames, boxes, and other joinery projects.

Design Features

• Right-Angle Frame: Holds materials at an exact 90-degree angle.
• Adjustable Pressure: Some models feature screws or spring mechanisms to fine-tune clamping force.
• Variety of Sizes: Available for different moulding widths and frame thicknesses.
• Materials: Typically made from steel or aluminum for durability and stability.

Applications

• Securing mitered corners in picture frames until adhesives set.
• Holding trim, moulding, or small box corners square during assembly.
• Used in conjunction with glue, biscuits, or spline joints for reinforced corner stability.

Best Practices

• Ensure the clamp is properly aligned before tightening to maintain square corners.
• Do not overtighten, as excessive pressure can damage delicate moulding.
• Use multiple clamps for longer frames to distribute pressure evenly across corners.
• Check for level alignment with a square or right-angle tool before glue sets.

Related Terms

• Pneumatic
• Burnishing Bone
• Screwdriver
• Phillips Screwdriver