Made for BIC ink, it should fit snuggly into place.
Features a line in the middle to check ink levels and working balisong mechanism. Has a small snap feature on the back to keep the “handles” away when writing. Also, updated with a small latch in the front to keep it closed, let me know how it works for you!
Needs support only on the handles where the screw goes.
To assemble it clean the supports and make sure the latches are clean of any debris, then place the BIC inside the main body (use some tape if it is loose, sand lightly the inside or the BIC if tight). Put two M3 nuts and 12mm screws to connect handles and body together.
The author hasn't provided the model origin yet.