What lid clearance should I use?
Start at 0.2 mm per side for a snug friction fit on a well-tuned printer. If the lid binds, step to 0.3; for a loose dust-cover fit, 0.4. Re-generate and print just the lid to dial it in.
Parametric box generator: exact inner size, fitted lid
Enter the inner dimensions of what you need to store — the box is generated around them, with wall thickness, corner rounding and a friction-fit lid whose clearance you control. It rebuilds live as real CAD, so hinges, latches or compartments are one AI edit away.
- - Dimensions are interior by default — size to the thing, not the print
- - Tunable lid clearance so the fit matches your printer
- - Rounded corners and clean walls, no supports needed
- - Want a hinge, latch or dividers? Remix with the AI agent
Parameters you can tune
Each parameter below rebuilds real geometry on every change — this is parametric CAD, not a scaled mesh.
| Parameter | Default | Range | What it does |
|---|---|---|---|
| Inner length | 80 mm | 20 – 250 | Interior length — size it to what goes inside. |
| Inner width | 50 mm | 20 – 250 | Interior width. |
| Inner height | 30 mm | 10 – 150 | Interior height under the lid. |
| Wall thickness | 2.0 mm | 1.2 – 4 | 2 mm ≈ 5 perimeters with a 0.4 nozzle. |
| Fitted lid | True | on / off | Friction-fit lid printed as a second body. |
| Lid clearance | 0.2 mm | 0.1 – 0.4 | Per-side clearance; 0.2 suits most printers. |
| Corner radius | 4 mm | 0 – 12 | Outside corner rounding. |
How it works
- 1.Open the generator — the model builds right in your browser, nothing to install.
- 2.Tune dimensions and options in the parameter panel; the geometry rebuilds live in 3D.
- 3.Export STL / STEP / 3MF for printing — or ask the AI agent for features beyond the sliders.
FAQ
How thick should the walls be?
2 mm is a good default — with a 0.4 mm nozzle that is about five perimeters, strong enough for everyday storage boxes. Go 3–4 mm for boxes that get sat on, stepped on or screwed into.
Can I add hinges, a latch or compartments?
Yes. The generated box is editable CAD code — open it in the Forgent3D workbench and ask the agent for a print-in-place hinge, a snap latch or internal dividers.