Dorm Bed Sheet Retention System - Exploded Parts

Design a product set for securing a fitted bedsheet to a college dorm bed frame. The target is the standard dorm bed: a Twin XL mattress (about 38 in x 80 in, 965 x 2030 mm) on a steel or wood frame. Frame length and rail shape vary by school, so the design must adapt rather than assume one rail profile. Work in millimeters. Export STEP, plus STL for prototypes. KEY CONSTRAINT: ADAPT TO UNKNOWN RAIL SHAPES - Do not hard-code a rail size. Make the rail-attachment parametric with named variables: RAIL_WIDTH and RAIL_THICKNESS, with defaults of [measure your bed], and a design range of [measure 3-5 beds, e.g. min-max]. - Attach to the frame with a webbing loop that goes around the rail (works for flat, round, or L-shaped rails), not a rigid hook. PART A: SHEET CLIP (fixed) - One-piece spring or flexure clip that grips the folded sheet edge, jaw opening about [2-5] mm, ribbed inner faces, fully rounded outer edges so fabric does not tear. - Includes a webbing slot [20 or 25] mm wide for a strap to pass through. - Overall size about [60-80] x [25-35] x [15-20] mm. Adjust as needed. PART B: ADJUSTABLE STRAP ASSEMBLY (backpack-style) - Sheet-gripping jaw like Part A, plus a backpack-style slider/tension-lock adjuster for flat nylon webbing [20 or 25] mm wide, [1.5-2] mm thick. - Show the webbing path; include a dummy webbing body for visualization. - Strap length range sized to wrap around a rail and back to the sheet at the mattress edge; length parameter named STRAP_LENGTH. - Use a side-release buckle or a fixed webbing slot at the far end. MANUFACTURING - Injection-moldable: uniform wall about [2-2.5] mm, draft at least 1-2 degrees, minimal undercuts, internal fillets at least 0.5 mm, outer edges filleted at least 1 mm. - Single plastic material, [confirm with molder]. Flex features designed for repeated daily use. - Suggest a parting line and gate location. OUTPUT - Parametric model with named dimensions, an exploded view, an assembled view, and a 2D drawing with key dimensions. - List your assumptions and likely failure points.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.