A300 thin case

thingiverse

Here is the text rewritten in American English with a Flesch-Kincaid score of 100%: A slim case designed specifically for the ASRock A300 motherboard. Dimensions: 150.9mm x 143.5mm x 54.4mm (excluding screw height and adhesive pads). This case is optimized for use with the Noctua NH-L9a-AM4 cooler and M.2 drives (bottom M.2 slot has no ventilation). There is no room for SSDs. The top part of the case comes in different versions to accommodate various M3 spacer nut lengths. No stress testing was done, so the material may warp under heavy use. Printed models were created using Middle_with_supports.stl and Top_6mm.stl, with the bottom.stl file made 0.5mm thicker for added rigidity. Required materials: * ASRock DeskMini A300 motherboard * Noctua NH-L9a-AM4 cooler or a similar model with shorter height * 4 x M3 20mm screws * 4 x M3 female/female hex spacer nuts (hex size: 4.6mm) * 4 x M3 washers (optional) * A sharp knife for cutting power button supports Print/STL notes: TOP: Insert M3 hex spacers into each leg mid-print, pausing the print before capping off the ends. Each model from 4 to 12 has an additional 0.5mm length (6mm has 6.5mm, etc.), with a layer height of 0.2mm. If no female/female hex spacers are available, motherboard standoffs can be used instead, as long as the correct length and thread match. MIDDLE: Three different STL files are provided: * Middle_with_supports.stl includes custom support structures for IO ports and power buttons. * Middle_PW_button_support_only.stl only includes supports for the power button. * Middle_no_supports.stl has no built-in supports. BOTTOM: Two files are available: one for countersink screws and another for non-countersunk screws. Assembly notes: 1. Remove supports from middle parts after printing. 2. Cut the power button free using a sharp knife. 3. Assemble components in this order: bottom, motherboard, middle, and top. 4. Use an old screw to attach the power button to the middle part before assembly. Notes: * The motherboard is a tight fit in the middle.stl file. If it's too tight, try scaling it down. * Models with different support configurations for the middle part are available. I printed mine using custom supports, but you can also use Curas' built-in supports if you prefer. * Supports for the power button can be cut to free it, but there is no need to remove them completely, as they have a very short travel distance. * The legs in the top part of the case have M3 female/female hex spacer nuts inserted mid-print for easy assembly. * A cooler height under 38mm is required. The Noctua NH-L9a-AM4 has a height of 37mm and provides about 1mm clearance. * The bottom M.2 slot has not been tested, but it may experience heat issues due to lack of ventilation. * IO ports in the middle model were moved slightly, and columns between front IO were removed (they broke off easily). This should provide a better fit, but it's not been tested. * Bottom_countersink.stl countersink size has not been tested.