This is a 3D printable variant of a flow frame, it is not meant to be a direct replacement for a flow frame. This frame is intended to be extracted outside of the hive and requires no modification to standard Langstroth equipment. This project is still in a very early stage and is largely untested. I have assembled a working version as pictured above. I will be posting a much better summary as well as detailed instructions soon.
My prototypes were printed using 4 perimeter, top, and bottom layers for strength and with 20% infill.