hand crank gear 3d model

axle crank arm hand crank machine machine realistic machine rendering machine rendering realistic realistic rendering rendering realistic wooden

Prompt

Complete Detailed Description: Hand-Crank Gear-Multiplier Generator 1. WOODEN FRAME (Housing Structure) PropertySpecificationMaterialPlywood (12mm thickness)Dimensions50cm (W) × 50cm (D) × 100cm (H)Total Volume0.25 m³ ✅Surface FinishSanded smooth, painted or varnishedColorDark walnut stain or matte blackJointsWood screws + wood glueBase4 rubber feet for stabilityWeight~8–10 kg assembled 2. HAND CRANK (Input Mechanism) PropertySpecificationMaterialSteel rod with rubber grip handleHandle Diameter25mm (comfortable grip)Crank Arm Length20cm (longer arm = more torque)Rotation Speed (human)~60–80 RPM comfortablyShaft Diameter10mm steel rodBearing TypeBall bearing (608ZZ) for smooth rotationConnectionBolted to input gear axle 3. GEAR SYSTEM (Speed Multiplier) PropertySpecificationTypeSpur gear train (3-stage)MaterialNylon or ABS plastic gearsStage 1 Ratio1:3 (large to small gear)Stage 2 Ratio1:3Stage 3 Ratio1:3Overall Gear Ratio1:27 (input 80 RPM → output ~2,160 RPM)Input Gear Teeth60 teethOutput Gear Teeth~20 te

4K·PBR·v3.1-20260211

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