Sand filled Bookshelf Speaker Box

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A speaker box crafted from plastic can sound subpar due to the walls of the box resonating in an unharmonious way. To rectify this, hollow walls are designed that can be filled with sand - a clever solution indeed! The added weight of the sand effectively prevents the walls from resonating, resulting in a superior sound quality. The incorporated horn significantly amplifies the little speaker's volume, making it much louder than it would be without. To build one of these innovative boxes, you'll need: * 1X inside Left STL * 1X inside Right STL * 1X outside Left STL * 1X outside Right STL * 2X sand lid STL Once assembled, the box is filled with sand, which can be sourced from your garden. Finer and drier sand yields the best results. After filling the hole, the "sand lids" are used to close it securely. To complete the build, simply insert the speaker into the box. The wire connecting the speaker passes through a special tube, which is made airtight by gluing it shut. A coat of blue paint adds a sleek finish to the entire assembly. When built at 100% scale, the dimensions of the box measure 170 x 120 x 100 mm. The bore for the speaker has a diameter of 60 mm, while the mounting holes for the screws are spaced 50 mm apart. The depth of the speaker chamber is approximately 77 mm. One of the benefits of this design is that it can be scaled up or down to accommodate speakers with varying installation sizes. For instance, at a resize of 110%, the bore for the speaker increases to 66 mm. Similarly, at 120% and 130% scales, the bores measure 72 mm and 78 mm respectively. The design has been thoroughly tested using a resolution of 0.2mm and a nozzle diameter of 0.4mm. To print this box with optimal results, use the following settings: * 3 Wall layers * 4 Top & Bottom Layers * Infill at 20% * A skirt of 2 lines This should yield a printed box that requires approximately 52 hours and 492 grams of material.