3D preview of Trunk Button Assembly
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Interactive 3D model of Trunk Button Assembly

Brackets and mounts

Trunk Button Assembly

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Bounding box
110.5 × 18.5 × 15.4 mm
Engine
Precision B-rep
Parameters
23
Published
August 7, 2026

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The prompt

Create a functional 3D printable automotive trunk release button assembly. The design consists of three separate parts: 1. Outer housing frame (fixed part) 2. Moving push button (sliding part) 3. Spring or flexible return mechanism Purpose: A replacement trunk lid push button for a car. The button must be mechanically functional, with a moving central button that returns to the original position after pressing. Overall dimensions: - Housing outer size: 52.3 mm width × 14 mm height × 12.8 mm depth - Wall thickness: 1.5–2 mm - Front bezel thickness: 1.5 mm - Internal clearance between housing and button: 0.3–0.5 mm Housing design: - Rectangular automotive-style bezel frame - Fixed mounting frame that installs into the trunk lid - Internal cavity for sliding button - Integrated guide rails on both sides - Rear area prepared for installation of a micro switch - Add mounting clips or locking tabs similar to OEM automotive parts - Rounded edges and smooth surfaces for injection-molded appearance Moving button: - Size approximately 47.8 mm width × 9.5 mm height × 8 mm depth - Slides inside the housing - Travel distance: 1.5–2 mm - Two side guide rails for alignment - Rear actuator stem to press a micro switch - Mechanical stop to prevent over-travel and switch damage - Slightly curved ergonomic front surface Spring mechanism: - Add a rear spring seat - Designed for a small compression spring from a pen - Spring cavity diameter approximately 5–6 mm - Alternative option: integrated flexible plastic return tab Micro switch compatibility: - Leave rear mounting space for a small automotive micro switch - Compatible with Omron D2F / D2FC style switches - Allow access for electrical wires Manufacturing requirements: - Designed for FDM 3D printing - Material: PETG or ABS - No supports if possible - Parts must print separately - Functional moving clearance for FDM printer tolerance - Optimized for a 0.4 mm nozzle printer (Elegoo Neptune 4) Design style: - OEM automotive replacement part - Clean minimal industrial design - Rounded corners - Strong mechanical construction - Real working assembly, not a decorative model Output: Create separate printable STL files: 1. trunk_button_housing.stl 2. trunk_button_moving_part.stl 3. spring_holder_or_return_mechanism.stl

Parameters

NameValueRange
Layout Gap30 mm20 – 80
Housing Width Outer52.3 mm40 – 80
Housing Height Outer14 mm10 – 30
Housing Depth Outer12.8 mm10 – 25
Wall Thickness1.8 mm1.2 – 3
Bezel Thickness1.5 mm0.8 – 3
Clip Width10 mm5 – 15
Clip Length (Z)4 mm2 – 8
Clip Height2 mm1 – 4
Clip Front Offset1.5 mm0 – 4
Button Width47.8 mm38 – 52
Button Height9.5 mm7 – 13
Button Depth8 mm5 – 12
Curvature Radius100 mm30 – 200
Guide Rail Thickness1.5 mm1 – 3
Side Slot Depth1.8 mm1.2 – 3.5
Slot Inset from Ends1.5 mm0.5 – 3
Stem Radius2.5 mm1.5 – 4
Stem Length5 mm3 – 8
Spring Holder Thickness4 mm2 – 8
Spring Cavity Diameter5.5 mm4.5 – 7
Spring Cavity Depth4 mm2 – 5
Edge Fillet Radius0.5 mm0.1 – 0.8

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.