Ever since the addition of the twisted corner, I've been excitedly exploring all the shapes and figures I've been unable to build previously. However, this one's still stumping me (see attachment). I cannot seem to completely fill in a uniform octagonal bevel without theoretical recursive use of smaller and smaller corner blocks. Does anyone know if it's possible to create this shape? Either using the same blocks, or different ones? I'm not interested in a perfect volumetric fill inside; only that the outer surface is complete.