How can I design an articulated model? What gap should I leave for my articulated models?

Our machines build your models layer by layer, and can therefore build any type of model, even with complex assemblies.

If you want to produce an articulated model, you just need to leave an appropriate gap between parts of your model so that separate parts are not joined during build. This lets you make pivot balls, cylindrical joints etc.

We recommend the use of white plastic to produce such items. With this material, a 0.02 in (0.5 mm) average gap is advisable for the articulation to work correctly. 

It depends on the form of the object, if there is a large enclosed area the excess powder will be trapped therefore the space needs to be larger.