Texas Instruments IWR6843ISK Millimeter-Wave Radar Custom Enclosure

A dedicated protective enclosure for the Texas Instruments IWR6843ISK millimeter-wave radar board. This model was reverse-engineered based on the physical dimensions of the radar board, primarily for circuit board fixation and physical protection. A 0.25mm gap is reserved on one side of the inner wall to compensate for the thermal shrinkage of 3D printed plastic during cooling, ensuring smooth insertion of the radar board. For interface clearance, the USB port features an open U-shaped slot extending to the top, avoiding the plastic housing of data cable plugs and supporting the insertion and removal of thick data cables. The side pin headers are designed with an outwardly expanded, fully enclosed protective cover, providing anti-breakage and short-circuit protection without contacting the pins. The enclosure has 4 positioning support posts with internal blind holes, 2.6mm in diameter, suitable for M3 metal screws for plastic self-tapping fastening. The overall structure has been optimized for overhangs, requiring no printing supports throughout, and leaving no support residue on the surface after printing.

When slicing, be sure to set the "wall loops" to 4 layers. This ensures that the 4 M3 screw posts are automatically filled solid during printing, preventing cracking due to localized thinning of material when metal screws are inserted. An infill density of 15% - 20% is recommended, and the "3D honeycomb (Gyroid)" infill pattern is highly recommended, as it offers excellent three-dimensional isotropic rigidity, effectively locking down the large base plate of the enclosure and preventing bed adhesion issues caused by internal stress from large solid areas in 3D printing. Since all spans of the model are within the safe bridging capabilities of Bambu Lab printer models, please disable printing supports directly in the slicing software to achieve the cleanest surface on gaps.