Theres good news & bad news
The first half of the bad news is the cube 3 is both proprietary& is discountied so it will b harder,

the good news

is there
Is 3rd party systems in place for that purpose,
• Its under 3d print .com news,( its an old article which this case particularly could have been a couple or few years or more)

&that brings us to the second half of the bad news

which is it is a huge gray area, it is controversial & is techically breach of contract
But not exactly illegal,can can b legit, under certain conditions for example you cant sell it without declaring it as moded