I need an STL file edited to embed multiple electrical wiring channels. Requirements: - Add multiple wiring channels - Maintain structural integrity and design Ideal Skills: - Proficiency in 3D modeling... (Budget: £10 - £20 GBP, Jobs: 3D Animation, 3D CAD, 3D Design, 3D Graphic Design, 3D Modelling, 3D Printing, 3D Rendering, Solidworks)