3D Box Generator

What is 3D Box Generator?

3D Box Generator is a free, open-source browser tool that makes boxes with dividers, three lid styles and text on the lid. It is made by Javis Perez and runs entirely in your browser, so nothing is uploaded. You set width and depth up to the bed size of the printer you pick (220 mm by default), height up to 200 mm, wall thickness and chamfers, then add up to ten dividers in each direction and drag them where you want. Finger slots can be cut into the walls so cards or coins are easy to pinch out.

Three lids are available: a cap that sits on top with an inner lip, a drawer-style sleeve the box slides into, and a hinged lid with pin-less snap hinges. The lid can carry engraved or raised text and emoji, or a cut-out pattern. Helpers size a box from a target volume or from the items you want to store, a printer check warns if a part will not fit your bed, and each part exports as its own STL with a filament estimate.

It is a young hobby project with a small following, but it is polished and generous for a free tool. It suits anyone who wants a quick custom box without an account.

What you can make

• Boxes with dividers
• Hinged-lid boxes
• Sleeve (drawer) boxes
• Engraved lids

How to use 3D Box Generator

1. Open the site and set the box size
2. Add dividers and finger slots
3. Pick a lid style and add text if you like
4. Export each part as STL