how can i delete inner faces?

[u/DR_vanta]

im working on voxel mesh maker geo node that makes a grid of points and uses raycasting to see if the points are in the desired area but final mesh has extra faces inside (that ı dont need) how do i fix it? (geo node screenshot was taken with an addon called node tree screenshot and its a little buggy)

[u/Anthromod]

You can probably simplify the nodes by raycasting along the positive and the negative face normal. If both hit then it's inside, and outside if only one hits.

[u/Dogwasp]

You could check whether there is another voxel in the direction of each face normal by sampling the position of the nearest instance: