In my mind I still have one other concept to test out. This is using the voronoi sole shape and extending the pieces on the edge to run up the side of the sole and join to the fabric. This means the sole doesn’t have a solid edge and is able to move and bend easily without and restriction. I modelled and printed this concept…
Printed out of PLA plastic so there is no flexibility just because this is cheaper as this model is noticeably heavier. I do like this concept as it is less flimsy and i would be able to print stitching holes along the top edge of each piece and even add a small groove so that once the thread is pulled tight it can sit flush.
The black has a nice shine to it and i think it will contrast well against the off white of the bio foam.
Rik Olthuis Design 