multi-card corner lanyard ring

This started as thing:1661564 and I simply added a sinuous loop to one corner to be hung on a lanyard where a card can be displayed either in portrait or landscape format. The card holder itself is designed to be fed cards in landscape format. Void between top and bottom inside surfaces is 4mm.

I've partially remodeled this, and added a "'back" to it to give a small amount of support, and re-profiled the sides so it should print cleaner now. This is the added 'HexBackRingLoopCardHIDHolder.stl