Tiffin Box Assembly

Step 1a — Outer block "Create a rectangular block, 260mm long x 140mm wide x 150mm tall, with 8mm rounded edges on all vertical corners." Step 1b — Hollow it out "Shell the block with a 5mm wall thickness, leaving the top face open." Step 1c — Tiffin compartment cavity "On the top face, cut a rectangular pocket for the tiffin compartment, 110mm long x 130mm wide x 120mm deep,positioned on the left side, leaving a 5mm wall on all sides." Step 1d — Cutlery compartment cavity "Cut a narrow rectangular pocket for cutlery, 25mm long x 130mm wide x 100mm deep, positioned in the middle section, between the tiffin and bottle compartments." Step 1e — Bottle compartment cavity "Cut a cylindrical pocket for the bottle, 80mm diameter x 120mm deep, centered in the right section of the box." All five of these stay in one part file — they're permanent cuts into a single solid body, no motion between them, so no components or joints needed here. Part 2 — Screw knob assembly (separate component, near bottle compartment) Step 2a "Create a cylindrical knob, 20mm diameter x 15mm tall, with a knurled ridged outer surface for grip." Step 2b "Add a threaded shaft, 6mm diameter x 40mm long, extending from the center of the knob's flat face." Position this component on the front face, low and to the right, directly beside the bottle compartment cavity — matching your sketch. Join it to the main box with a revolute joint (rotation) on the shaft axis so turning the knob is the motion you'll animate later. Part 3 — Telescoping rod (separate component, top-left corner) Step 3a — Outer tube "Create a hollow cylindrical tube, 14mm outer diameter, 11mm inner diameter, 80mm long." Step 3b — Inner sliding tube "Create a solid cylindrical rod, 10mm diameter, 120mm long, sized to slide inside the outer tube." Step 3c — L-shaped clip at the top "Create an L-shaped bracket, 30mm x 30mm, 8mm thick, attached perpendicular to the top end of the inner rod, forming a hook shape for stacking a second tiffin." Position the outer tube fixed at the top-left corner of the box (matching your sketch), and join the inner rod to it with a slider joint so it can extend and retract — you can add joint limits (0mm to 120mm) so it doesn't slide out completely. Assembly order Build Part 1 (box) first — it's your foundation, everything else attaches to it Add Part 2 (screw knob) as a new component, position it, then joint it Add Part 3 (rod), position it, then joint it Test both joints by dragging in Fusion before you commit to final dimensions — this is where you'll catch if the rod interferes with the tiffin lid opening, or if the screw knob is too close to the box edge to turn comfortably

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.