Free Parametric Box Generator
Design custom 3D-printed boxes in your browser — exports STL for any FDM slicer. No signup.
About the Box Generator
Designer Bee's free parametric box generator lets you design custom 3D-printed boxes in your browser — no account, no CAD software, no install. Set the width, depth, height, and corner radius with sliders, add a sliding lid, drop in compartment dividers to turn it into a storage box, and choose your wall thickness. A live 3D preview updates instantly. When you're ready, export a binary STL ready for Cura, PrusaSlicer, Bambu Studio, OrcaSlicer, or any FDM slicer — sliceable on any 3D printer with PLA, PETG, ABS, or any material your printer supports.
File Format & Compatible Software
Exports binary STL files for 3D printing. Works with Cura, PrusaSlicer, Bambu Studio, OrcaSlicer, and any slicer that reads STL. Print with PLA, PETG, ABS, or any material your printer supports.
Who Is This For?
Perfect for makers, hobbyists, teachers, and students who want custom storage boxes, gift boxes, or organizer inserts without learning CAD software. If you can move a slider, you can design a box.
Make it a gift
Turn any box into a wrapped present. In Advanced → Gift Box, switch the lid decoration to Bow and turn on Ribbon: ribbon bands wrap down every wall and cross over the lid, and a real standing bow - two upright ribbon loops you can see through, a knot, and trailing tails - rises from the center, just like a hand-tied present. The bow is fully yours to shape: loop size, width, and lean, tail length, width, angle, and height, and knot size are all sliders, so every gift box can carry a different bow. Prefer a softer, sculpted look? Set the wall style to Fluted for vertical ribs that reed around the outside while the inside stays smooth and the wall thickness holds at every valley. A decorated lid prints as a solid lift-off slab, bow up, with no supports at the default sizes; the fluted walls print upright the same way. Two ready-made starting points, Gift Box (ribbon + standing bow) and Fluted Gift Box, are in the presets.
Two-color trick, any single-extruder printer: because the ribbon and bow sit above a known height, watch the layer where the lid's flat top ends and the bow begins, then use your slicer's filament change (M600) at that layer. Load a second color and the box prints in one tone with the ribbon and bow in another, no multi-material hardware needed. On a fluted box you can do the same swap at the rim to accent the top edge.
Frequently Asked Questions
What file format does the Box Generator export?
The Box Generator exports STL files for 3D printing. STL files work with slicing software like Cura, PrusaSlicer, and Bambu Studio.
Do I need to create an account?
No. The Box Generator is browser-based and completely free. No sign-up, no data collection — your designs stay on your device.
Can I use the box designs commercially?
Yes. The designs you create are yours to use however you like, including selling finished products.
Can I customize the box dimensions?
Yes. You can set custom width, depth, height, corner radius, wall thickness, add sliding lids, and include compartment dividers — all with a live 3D preview.
Does it work with Cura, PrusaSlicer, and Bambu Studio?
Yes. The Box Generator exports binary STL files with proper triangle normals, so they slice cleanly in Cura, PrusaSlicer, Bambu Studio, OrcaSlicer, and any other FDM slicer that reads STL.
Can I make a storage box with custom compartments?
Yes. Add compartment dividers in either direction to turn the box into a storage organizer — useful for drawer inserts, parts bins, jewelry trays, or desk organizers. Pair with a sliding lid to keep contents enclosed.
Can I make a decorative gift box with a ribbon and bow?
Yes. In Advanced, set the lid decoration to Bow and turn on Ribbon to wrap ribbon bands down the walls and over the lid, with a standing bow of upright ribbon loops at the center. The bow shape is fully adjustable (loop, tail, and knot sliders), or choose the Fluted wall style for reeded gift-box walls. A decorated lid prints as a solid lift-off slab, bow up, with no supports at the default sizes. Start from the Gift Box or Fluted Gift Box presets. Because the ribbon and bow sit above a known height, you can swap filament color at that layer for a two-tone box on any single-extruder printer.
