Design available to download on Cults3d -Click Here
Description
This is the simplified STL version of the 737 433 Korry used for Master Caution, Fire Warning, and Stab Out of Trim indications. Designed as a budget‑friendly, ready‑to‑print model, this version focuses on accessibility and ease of assembly while still providing a realistic look for your home cockpit.
Perfect for builders who want a quick, reliable Korry replica without the need for heavy CAD customization.
What you get:
Pre‑sliced STL files only (no electronics, lenses, hardware, or CAD source files).
There are no 3d print lenses in this package, as the text is too small to print.
What Makes This Version Great
Affordable: A cost‑effective alternative to the full CAD package.
Ready to print: Clean STL meshes optimized for resin or FDM printing.
Fits most DIY simulators: Designed around the 737SS format using real-world dimensions.
Simple assembly: Uses tactile LEDs and a push‑action switch (not included).
Authentic appearance: Lens opening matches the size of real Boeing Korry lenses.
Optional premium lenses:
Enhance the look with professional‑grade acrylic lenses:
https://www.737diysim.com/product-page/737-master-caution-fire-warning-stab-out-of-trim-annunciators-lensesIncluded Files (STL Pack)
Front Housing STL
Internal LED/Switch Carrier STL
Rear Retainer STL
These files are pre‑oriented and support-friendly for most slicers.
Important Limitations
Digital STL files only — no physical parts
Not a 23×23 mm aftermarket annunciator size
Slightly larger outer dimensions than metal originals due to 3D print tolerances
Designed for hobby use; may require minor sanding or tweaking depending on printer accuracy
Suggested Uses
737 home cockpit builds
737SS project
Custom flight sim panels
DIY annunciator replacement or testing
Prototype panel layouts
3D printing settings
Build/Parts/Print guide:
https://www.737diysim.com/build-guides-1/737ss-master-caution-%26-fire-warning-korry
Printing Recommendations
Material: PLA or PETG
Layer Height: 0.12–0.20 mm
Shells: 2–3 for durability
Supports: Minimal (mostly under internal features)
Colour: Black or dark material recommended to reduce light bleedAssembly Notes
Uses 2 LEDs (3 mm or 5 mm, depending on your PCB choice)
Designed for a tactile press action when mounted with a tactile switch
Wires and electronics not included
For the best experience, pair with the dedicated PCB available separately https://www.737diysim.com/product-page/737-master-caution-fire-warning-amp-stab-out-of-trim-annunciators-pcb
