Wiktionary
cube out
vb. To reach the volume limit of a container.
Usage examples of "cube out".
There was something about this crystal cube out of the unmeasured past, perhaps from the dawn of all history, that constituted a challenge that would not let him sleep.
She pulled the cube out and walked to the kitchen to destroy it, heedless of the water dripping into her carpet.
Loosening an edge of the pack, she took the message cube out of her boot.
Her landing had left barely enough room for people to bring the Cube out and haul it up.
And yet, I still can't get that big, mist-shrouded cube out of my mind.
I pushed the small antimatter cube out into the now at the proper juncture of fault lines and shifting rock and retreated into the sky and the now to watch.