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Printing an Articulated Groot: Joints, Multicolour and Getting It to Move

A guide to 3D printing an articulated, multicolour Groot figure — how print-in-place joints work, Z-offset and first-layer tuning, and how to set up the colours on an AMS or MMU printer.

Gift guide · Published 16 Sept 2026

Printing an Articulated Groot: Joints, Multicolour and Getting It to Move

What articulated actually means on a printer

An articulated figure prints with its joints already assembled — the parts are modelled with a tiny gap between them, and the printer lays down both sides of the joint in one job. When the print finishes and you flex it, the joint breaks free and moves. There is no assembly and no glue, which is the whole appeal. The catch is that those gaps are small, typically a few tenths of a millimetre, and if your printer squashes the first layer or over-extrudes, the gap fills and the joint fuses solid. Articulated prints are, more than anything else, a test of whether your machine is well tuned.

Tuning before you print

Do two things before committing to the full figure. First, check your Z-offset: the first layer should be flat and slightly pressed, not smeared and shiny. An over-squashed first layer is the most common reason joints fuse. Second, run a quick flow calibration, because over-extrusion closes joint gaps just as reliably. If your slicer offers an elephant's foot compensation setting, a small value helps. Print at a moderate speed, keep the bed temperature at the lower end of your filament's range, and let the print cool completely before you try to move any joint — flexing it warm is how joints tear.

Setting up the colours

The model is prepared for multicolour printing, meaning the bark, the eyes and the moss are separate bodies you assign to different filaments. On a Bambu AMS, Prusa MMU or any multi-extruder machine, import the model, map each body to a slot, and let the printer handle the changes. Expect multicolour to take noticeably longer than a single-colour print, because of the purge between colours, and expect a purge tower or a poop chute that uses some filament. On a single-colour printer, print the whole figure in one filament and paint the details — a brown body with painted eyes is entirely respectable.

Freeing the joints and living with it

Once fully cool, work each joint gently by hand. If one is stiff, flex it a little further in each direction rather than forcing it; if one is genuinely fused, a craft knife along the seam usually frees it. Articulated figures are handled far more than static ones, so they wear at the joints over time — that is normal. Keep it away from sunlight and heat, which soften PLA and tighten joints. If you would rather have one arrive already printed, tuned and freed, the finished figure is available from the studio.

Common questions

Why did my articulated print fuse solid?+

Almost always an over-squashed first layer or over-extrusion filling the joint gaps. Check Z-offset and flow calibration before printing again.

Can I print an articulated multicolour figure on a single-colour printer?+

Yes. Print it in one filament and paint the eyes and details by hand. The articulation works the same either way.

What printers can print the multicolour Groot?+

Any multicolour-capable machine — Bambu AMS, Prusa MMU or a multi-extruder printer. Map each colour body to a filament slot in your slicer.

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