3.5 mm Audio Extender Protective Sleeve

Design a 3D-printable, one-piece, hollow protective sleeve for an existing 3.5 mm female audio extender. Use millimeters. DIMENSIONS: * Total length: 32.75 mm, including flange. * Mounting flange: 14 mm diameter, 2 mm thick. * Sleeve barrel: 8.70 mm outside diameter. * Main internal bore: 7.20 mm diameter. * Internal retaining collar: 3.175 mm (1/8 inch) long. * Retaining collar opening: 6.20 mm diameter. CONSTRUCTION: * The flange and barrel must be concentric. * The sleeve must be hollow and open through the center. * The extender slides inside the sleeve. * The internal retaining collar must catch the extender’s wider exterior shoulder to prevent it from being pulled out when headphones are unplugged. * The collar must not enter or obstruct the extender’s female audio socket. * The headphone plug must pass freely through the 6.20 mm opening. * The retaining collar must be an internal shoulder, not an external ring. * The finished model must be one continuous solid, with no separate components, caps, or plugs. IMPORTANT: The sleeve protects the extender from physical stress. Do not redesign the audio connector or insert anything into its female socket. OUTPUT: Generate the actual 3D CAD model, show a cross-sectional view of the internal retaining collar, label all dimensions, and export a watertight STL file plus editable source.

Parameters

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.