Stacked Pentahexes

There are 123 stacked pentahexes with a total of 615 hexagons. I think it's to hard to produce physical pieces, but the computer can act rather easily on this set.

Here are two constructions symmetric under 60 rotation. To get a solution I split the whole construction in two parts, which were solved separately. Click the pictures to see the layers.

A prism symmetric under 60 rotation isn't possible to construct. We have 615=5*3*41 and the cross-section might be 15, 41 or 123. On the other hand it's impossible to divide 15, 41, 123, 14, 40 or 122 by 6 without remainder. But a prism with triangular symmetry can be made.

Rectangular like cross-sections are also possible.