Here are some shots of the test build of another tile system, designed to play at 1cm = 1" scale, i.e. printing 28mm miniatures at around 40% size. Each tile is made of a 6cm square glued to a base with some slots, creating a simple slot and connector system.
Tiles are kept together by fitting connectors to the slots...
This results in a mesh of small connected squares.
Here is a shot with some miniatures (from Battle Studios) printed at 40% scale.
At this size, I can fit three tiles per page, meaning I would need twelve pages to make the equivalent of a 3'x3' board. Each tile could be two-sided, to add variety too. I think that for 6" tiles -- to play with 28mm scale miniatures, for instance -- additional slots would be needed to keep the tiles aligned. Also, each tile would require two sheets of paper to build, so I do not think this design would be very good for larger scales.