iPad / Pro / Air / Air2 stand

I needed a stand for an iPad Air 2, to have it stand upright. Works of course in landscape as well. There are two versions to fit multiple iPad models, slot width 6.3mm and 7.7mm.

The .stl files differentiate in the following:
Stand_63 with 6.3mm, works with iPads that are 0.24" thick, like:
- iPad Pro 10.5" 2017
- iPad Air 2
- ...

Stand_77 with 7.7mm, works with iPads that are 0.29" thick, like:
- iPad Air
- iPad 6th gen 2018
- ...

It will fit to many more, but best is to just measure the thickness of yours, should be slightly thinner than 6.3mm or 7.7mm. Then it will work.
I sticked some thin rubber to the rear feet, to prevent it from sliding, works very well.