- Too tight? Increase internal dimension or clearance by 1–2 mm.
- Walls look flimsy? Increase wall/divider thickness to 3 mm.
- Box not hollowing correctly? Ensure the inner shape is a Hole, aligned, and Group again.
- Lid jams? Add more clearance (up to 1.0–1.2 mm).
- Topples easily? Widen the base or lower the height to improve stability.
Lesson 1: Why 3D Design Matters?
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Lesson 2: Meet BlocksCAD – Design with Code!
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Lesson 3: Tinkercad Time – Easy 3D Tools
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Lesson 4: Let’s Design to Help Someone
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Lesson 5: Shape, Size, Function!
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Lesson 6: Prepare It for 3D Printing
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