I need a simple yet precise 3-D printable enclosure built in Blender for a custom PCB that measures no more than 10 × 10 cm. Once I provide the exact board outline and connector positions, you’ll model a snug-fitting box around it, leave the internal spacing I specify for standoffs, and make sure all walls respect typical FDM tolerances. Please work natively in Blender, keeping the object clean, watertight, and manifold. When the model is approved, I’ll need both the .blend source and an STL that slices without error in Cura and PrusaSlicer. For acceptance I’ll quickly drop your STL into my slicer; if it passes without repair and the interior fits the PCB footprint I give you, the job is done.