Modular 2-Piece Adult Toothbrush (Handle Assembly + Brush Head)

Create a complete adult modular toothbrush as a FINAL ASSEMBLED CAD MODEL with exactly TWO separate components. COMPONENT 1 — PERMANENT HANDLE ASSEMBLY: Create an ergonomic wooden handle, 125 mm long, maximum 22 mm wide × 17 mm thick, with a rounded-rectangle/oval cross-section, shallow 22 mm long × 1.5 mm deep thumb rest, subtle index-finger support, fuller central palm grip, and rounded rear end. Immediately at the front create an integrated 18 mm long TPE/TPU flexible connector with an 8 mm controlled-flex section, minimum thickness 4.5 mm, smooth R2 mm transitions and mechanical stops limiting flex to approximately ±7°. At its front, create an asymmetric keyed male push-and-twist locking interface, 8 mm long, for the replaceable brush head. Handle and connector must be ONE CAD component. COMPONENT 2 — REPLACEABLE BRUSH HEAD: Create a conventional adult toothbrush head from neem wood, 31 mm long × 12 mm wide × 6 mm thick, rounded front R3 mm and side edges R1.5 mm. Integrate approximately 36 soft nylon/polyamide bristle tufts into the head. Bristle diameter 0.15 mm, visible height 10 mm, tuft diameter approximately 1.2 mm, arranged in approximately 6 × 6 staggered rows. Bristles are PART OF COMPONENT 2, not a separate component. Add the matching asymmetric female keyed socket at the rear of the head for the handle connector, with approximately 10 mm socket length and 4 mm depth. FINAL ASSEMBLY: Create both components separately and then assemble them together. The brush head must push onto the connector and lock with approximately 30° twist. Align the head with the handle longitudinal axis. Show the final complete toothbrush and an exploded view containing ONLY the two components. Use smooth R1–R2 mm external fillets and 0.5 mm × 45° lead-in chamfers. No electronics, lights, water, batteries or unnecessary features. The final model must look like a realistic, manufacturable, premium sustainable product-design prototype.

Parameters

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