Thanks, for all the interest and replies.
I use transparent bases for at least 8 years. It looks nice, adapts to any terrain and saves flocking and painting the bases
I've got an CNC milling machine and so I can make them at home. On a good day without any hassle, but I do not want to talk about the bad days.
The material is cast acrylic glass. The cast variety is more expensive than the "ordinary" extruded acrylic glass, but the edges will be cleaner and it will not splinter or break, when milled, sawed or drilled.
For Epic I have different types of bases, one for each "category" of model. Dimensions fit into an 4 mm grid.
Infantry bases and other bases with a "socket" have 1 mm deep grooves for the miniatures sockets and the vehicle bases have 0.1 mm grooves for the tracks. You could mount the vehicles directly on the surface, but with the grooves they are much easier to position and don't slide around, while the glue is still moist and any excess glue will be kept in the groove and will not spill on the surface.
All bases have a hole which will be hidden under a model. The holes take magnets, so the army can easily be stored. The magnets fit snugly into the holes, so it's enough to press them in - no glue required.
That's what they look like: The infantry base has the magnet already inserted.
Regarding the Drop Ship - as I found out, it is called:
I was quite enthusiastic, when I discovered it. But after the first excitement is gone, I'm not so sure what to do about it. Scale wise it's way off - like the very old Thunderhawks - so it doesn't really fit and I probably wouldn't use it in a battle anyway. On the other hand it's a really cool model.
I sleep on it.
Regards
Stephan