Problem with creating a tetrahedral unit cell


I’m having some problems creating a tetrahedral lattice with diagonals of opposite faces in opposite directions (perpendicular to each other) using intralattice.
The diagonals in opposite faces seem parallel even though the given unit cell has the intended wireframe. (14.2 KB)
cube_single_cell.3dm (103.0 KB)

I tried making the box using points deconstructed from mesh box (the method proposed by @laurent_delrieu in the following thread: Problem with creating functionally graded lattice structure) but it’s not working as intended.

Any help would be appreciated.
Thank you. (19.9 KB)