paper feeder 3d model

Design a 3D-printable gravity-fed paper feeder for a paper shredder. The feeder should hold A4 paper vertically and feed sheets using gravity only. Include an adjustable sliding gate with click/step positions to control how many sheets (approx. 4–5) can pass at once. The bottom opening must be narrow and adjustable, with smooth surfaces to prevent jamming. Add a wide top flange so the feeder rests securely on the shredder and cannot be pulled inside. No motors or springs. Simple, robust design suitable for PLA or PETG printing. Style: functional and minimal.