Perfect for bookbinding, boxmaking, and other crafts and hobbies. Each clamp includes one outer and one inner piece.

These clamps are 3D-printed with durable PLA plastic and feature securely embedded neodymium magnets. They’ve been tested with 3mm-thick cardboard and can hold even thicker materials. 

Available Sizes:

• 40 x 40mm – 10mm high: Includes a weaker magnet which is best for materials up to 1.5–2 mm thick.
• 40 x 40 mm – 18 mm high: Stronger magnet suitable for thicker materials.

Clamps are sold in an individual pair (1 corner at a time) or in sets of 4 pairs (4 corners at a time), which also includes a straight edge for T-joints.

Note: The larger, double-level clamps have very strong magnets. To avoid damage, separate them by sliding sideways rather than pulling directly apart.