
Boeing 737 Start Switch - Servo Operated
This page is split into three main sections:
Parts Guide
Print Guide
Build Guide
The ultimate printer I can recommend is the Bamboo Labs X1 carbon with AMS if you have deep pockets. ($1200). It's a massive leap forward in 3D printing, with excellent quality and impressive speeds. Its pretty much press print and go as the software and hardware do the calibration before each print. This printer will not manage the larger parts and you are going to need the CREALITY CR10 v3, which is my second choice of printer.

This design is a remake of my old design, but this time inspired by Mickey's flightdeck Youtube video:
https://youtu.be/I7Kqpa-pmkg
The use of an MG90S micro servo instead of an inductive load such as a solenoid was genius and in my opinion a massive step forward and now the only way ahead! We can forget about the weak acting and high current solenoids, remove the reverse bias diodes and relays. This design is:
Simpler
Stronger
Uses less current
Does not require a separate different voltage supply
My new design consists of 6 simple 3d printed parts, including the knob. These are quick to print and assemble. You will require some extra hardware, please see below in the component parts section.
The unit can now be affixed to the panel by the same nut used for the rotary switch, it's the imperial version that comes with most switches. Or you can attach the unit by the 4 attachment holes in the upper case assembly.
This design requires a print size of 220mm x 220mm.
General Information:
Parts Guide:

You are going to need the following items to complete this build:
Click Image for Link | Component | Description | Qty |
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Print Guide
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01 Actuator Rod
Support: On
Qty: 1
Adhesion: Skirt
Nozzle: 0.4mm
Speed: 40mm/s
Layer Height: 0.2mm
Infill:100%
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05 BasePlate
Support: Off
Qty: 1
Adhesion: Skirt
Nozzle: 0.4mm
Speed: 40mm/s
Layer Height: 0.2mm
Infill:25%
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02 Upper Case
Support: On
Qty: 1
Adhesion: Skirt
Nozzle: 0.4mm
Speed: 40mm/s
Layer Height: 0.2mm
Infill:25%
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06 Knob
Support: On
Qty: 1
Adhesion: Skirt
Nozzle: 0.4mm
Speed: 40mm/s
Layer Height: 0.2mm
Infill:25%
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03 Lower Case
Support: On
Qty: 1
Adhesion: Skirt
Nozzle: 0.4mm
Speed: 40mm/s
Layer Height: 0.2mm
Infill:25%
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04 Actuator Cam
Support: On
Qty: 1
Adhesion: Skirt
Nozzle: 0.4mm
Speed: 40mm/s
Layer Height: 0.2mm
Infill:25%

Build Guide



