Preformed Crown Molding Corner Pieces. Designed for clean, professional-looking transitions, these corners eliminate the need for complicated miter cuts—saving you time, materials, and frustration.

Each piece is 3D printed using durable, eco-conscious PLA and features smooth contours that seamlessly blend with standard molding profiles.

A thoughtfully crafted front face reveal stands slightly proud of the molding, adding visual depth and providing a subtle margin for error—ideal for walls that aren’t perfectly square.

Choose from 87° to 93° in 1° increments for standard inside and outside corners to ensure a snug, gap-free fit. And to make installation even easier, each piece is clearly embossed with its angle on the back—no more guessing or mixing up your corners.

Need less common 135° for walls set on a 45° angle? We have that angle cover as well!

To ensure a smooth installation process, positioning jigs are available to help hold both the corner pieces and crown molding in place. These jigs act as an extra set of hands, maintaining proper fit and alignment—especially helpful when working with long runs of molding.

Get started by downloading our free Angle Measurement Planning Sheet and reviewing the Installation Instructions. These resources will guide you in choosing the perfect angle and help deliver crisp, professional results every time.