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Flexible.
Articulated.
Built to move.
Flexi3D is BUI3D's dedicated platform for articulated and flexible 3D print designs. Engineered for motion, tuned for Bambu Lab printers, and built to be printed on day one.
Engineered for motion. Built to print.
The Flexi3D range combines BUI3D original designs with a curated selection of articulated models from independent designers, each licensed for commercial use. Every product is print-in-place ready, calibrated for FDM tolerances, and optimised for Bambu Lab slicer profiles.
Articulated joints
Ball-and-socket and living-hinge systems engineered for repeatable motion with no post-processing or glue required.
Bambu Lab optimised
Every model ships with a tested .3mf profile for Bambu Lab X1, P1, A1, and H series - just open and print.
UK toy compliant
Physical products meet the Toys (Safety) Regulations 2011 (S.I. 2011/1881) and carry the UKCA mark for the GB market.
Digital downloads
Instant STL and 3MF file delivery. Print at home or order physical units directly from the Flexi3D store.
Growing range
BUI3D originals alongside commercially licensed designs from independent creators. Every model is vetted, print-tested, and sold with the designer's permission.
FilamentLab integration
Link to your FilamentLab account to get material recommendations matched to your on-hand filament stock.
Design your own
articulated models
The Flexi3D generator is a browser-based design tool for creating and customising fully articulated flexi pet models, optimised for reliable multi-colour 3D printing. No CAD knowledge or sculpting experience required. No software to install.
Configure your model in the browser, export print-ready files, and go straight to the printer. Every output is tuned for Bambu Lab multi-colour workflows from the ground up.
- Fully browser-based. Open a tab, start designing. No account required to explore.
- Articulated from the start. Every joint, segment, and connection is engineered for real-world printability at the model level.
- Multi-colour optimised. Colour zones are separated at the geometry level, ready for Bambu Lab AMS workflows out of the box.
- Export and print. Download a validated .3mf file with tested profiles for X1, P1, A1, and H series printers.
- No skills required. Designed for makers at every level, from first-time creators to experienced designers looking to move faster.
Made by BUI3D
BUI3D is a UK maker technology company building software and hardware tools for the 3D printing community. Flexi3D is the dedicated home for BUI3D's articulated toy and model range - a combination of original BUI3D designs and carefully selected models from independent designers, each held under a commercial licence, printed in the UK, and shipped across Great Britain.
BUI3D also makes FilamentLab - the filament management platform for Bambu Lab owners - and a growing suite of maker tools. Everything is built by a single maker who actually uses the products.
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