Using Geometry as a mask?

Not sure where to post this question but here goes. I would like to use a material/geometry for a mask on another geometry object. Is this possible in Sketchfab?

maskTest_1

this is what I am trying to accomplish
maskTest_2

1 Like

Basically a clipper is what I am looking for.

https://threejs.org/examples/#webgl_clipping

There is no mask/clipper functionality in sketchfab.
That said Unofficially/unsupported user are known to user refraction to fake/trick it, as current refraction
only allow one “layer” of refraction/blending. (Little Secret (Fabergé style) - 3D model by Miguelangelo Rosario (@miguelangelo2k) [5591325] - Sketchfab)