Wise Buys: Right-angle Assembly Squares

Here are assemble aids that hold those right angles together until the glue dries or you can secure corners with screws or nails. We recommend the models below.

LEGO Creator Expert Assembly Square (10255)

Homemade Hold-downs

Wise Buys: Right-angle Assembly Squares

VEVOR 90 Degree Positioning Squares, 5.5 x 5.5 Right Angle Clamps for Woodworking, Aluminum Alloy Corner Clamping Squares for Boxes Cabinets Drawers, 4 Pack

Here's a cute trick for clamping acute angles

Square (tool) - Wikipedia

HARDELL 90 Degree Positioning Squares, Right Angle Clamps 5.5 x 5.5(14 x 14cm) Aluminum Alloy Woodworking Carpenter (4 Pack), Carpentry Squares - Canada

Square (tool) - Wikipedia

Milescraft 8" ClampSquares - 90 Degree Corner Clamp, Positioning/Assembly Squares (Set of 2) 4011 - The Home Depot

LEGO Creator Expert Assembly Square (10255)

Square (tool) - Wikiwand

Wotendy 2Pcs 90 Degree Positioning Squares, Aluminium Alloy Right Angle Ruler Clamps Woodworking Carpenter Tool Corner Clamping Square for Picture Frame Box Cabinets Drawers, Carpentry Squares - Canada