On Sale! by Tom Paul in Scripts and Addons

Creating conformal channels around mesh objects which can be used for boolean operations ( eg: with molds or structures that require a cooling channel) . The created mold with these channels can be manufactured by Additive Manufacturing (3D Printing). 

This version can generate three channel types named as 'Mod1', ' Mod2 ' and 'Mod3'.

Installation Video

Compared to the previous version this version applies implicit modelling through Metaball objects which ensure complex channel structures with smooth blending for Mod2 and Mod3.

Below shows Cavity and core models with conformally created channel path