Available to download on Cults3d - Click Here
 
Digital STL download — no CAD files included. No physical parts, electronics, or hardware supplied.
 
This listing offers a cost‑effective STL‑only version of the Boeing 737 EFIS V6 for builders who want the look, feel, and backlit aesthetics of the 737 EFIS without needing editable CAD files.
 
These STLs are ready to slice and print, making this version ideal for hobbyists on a budget or for those confident that their printer produces consistently dimensionally accurate results.

This is the same visual and mechanical design found in the full CAD package, refined over months with the 737DIYSIM community and tested on multiple printers.
 
What You Get (STL‑Only Package)
 
Complete STL set for printing the full Boeing 737 EFIS V6 unit
Ready‑to‑slice models designed for FFF printers
Includes all mechanical parts, knobs, housings, internal supports, and structure
Laser DXF files are included for those who want to laser‑cut/engrave faceplates
No CAD files included — fits can only be edited in a slicer
 
Key Features

Authentic Backlighting
Designed for 12V LED strip lighting and tactile illuminated buttons to replicate the real EFIS glow.
Note: LEDs illuminate text only — they do not indicate the system's functional status.
Functional Control Layout
Both upper knobs feature dual‑axis operation
All four knobs include a push‑button function
Compact, realistic control set with impressive mechanical capability
Printable on Most Calibrated Machines
Modular design split into smaller parts for easier printing
Gears and tolerances refined across multiple test builds
Developed primarily on the Bambu X1
Shafts can be printed in resin (recommended) for increased strength
 
Why Choose the STL‑Only Version?
 
Cheapest way to build the EFIS V6
Perfect for those who want to “print and go”
No need for Fusion 360 or CAD adjustments
Great entry point for home cockpit builders with budget constraints
If you need editable surfaces, press‑fit adjustments (shaft/spline/gears), or want to optimise the build for your exact printer, consider upgrading to the full CAD package.
 
Recommended Optional Upgrades
For a professional appearance and perfect backlighting:
Laser‑Etched Faceplates & Buttons
https://www.737diysim.com/product-page/efis-v6-laser-etched-faceplates
These are completely optional — the EFIS can be built purely from 3D‑printed parts.
Limitations of the STL‑Only Version
Please read carefully:
No CAD files included — all models are “as‑is”
Fit adjustments cannot be edited
Your printer must be well‑calibrated for tolerances to work correctly
Backlighting is purely cosmetic (no functional indicators)
No electronics, switches, encoders, or LED strips included
Some sanding/finishing may be required, depending on your machine/materials
3D printing settings
Materials & Print Recommendations
PLA or PETG for body/panel parts
Resin (tough engineering resin recommended) for shafts and small mechanical parts
0.12–0.20mm layer height for crisp text and panel edges
Dry‑fit gears and shafts prior to gluing
Add light‑blocking paint where necessary for clean backlighting
Build Guide
Full guide available here:
https://www.737diysim.com/build-guides-1
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