A 3D-printable casement window stay (restrictor) that holds the window in a slightly open position for ventilation while preventing full opening.
The design requires no additional bolts, pins, or fasteners for assembly — all parts snap together. Print the components, assemble by snapping, and mount to the window frame using standard screws.
Two hook variants are included to match different frame configurations.
Lever + Mounting Plate combined length: 137 mm.
Specifications
- Total Length (Lever + Plate): 137 mm
- Function: Holds casement window in a fixed partially open position
- Components: Lever, mounting plate, two hook options
- Assembly: Snap-fit, no extra hardware needed
- Mounting: Standard screws (not included)
Material Recommendations
- PETG: Recommended for durability and weather resistance outdoors.
- ASA: Preferred for direct sun exposure (high UV stability, low warping).
- Infill: 40%+ recommended; 4+ perimeters for strength.
Notes & Assembly
- Snap Assembly: Parts click together without tools or pins.
- Installation: Mount plate to frame, hook to window; adjust position as needed.
- Support-free: Designed for FDM printing with minimal or no supports.
- Hardware: Use appropriate countersunk screws for your frame material.
STL (Stereolithography, filesize: 296 KB)