So then the rubber sides are not required,

however, the valve system will lock things together.

And much like the space escalator,

if small holes can be pre-designed per cube,

to eventually drain it out when it reaches the top,

and poured in liquid cement in order to fuse

everything together,

or to descend down a bot, to weld the inner skeleton

system from within. or both.

the bot would not be pressure-sensitive as the small hole

will be removed of the water.

they just need to lock together precisely....