I could achieve the same effect by making the arms thicker. Though I am thinking of printing the screw caps in TPU to see if I can make it stiffer that way.
Trying to keep the parts the same as the main thing this belongs too. M2 threaded inserts and 5mm screws. So not a lot of flexibility when it comes to thickness. That said, as a MK2 I’d probably make it 2mm thick rather than 1.2mm since that’s my goto size for stiffness.
I’ve been at this for years, most of my designs are like your solid parts (Display Stands and DS Stylus). I’ve only recently tried experimenting with moving parts, and I’ve found using mixed mediums the best when 3D printing. i.e. using cloth or leather as the moving medium, with TPU or PETG for strength/flexibility.
As for what this is for. I’ve designed and made 3D Printable e-reader cases, which this link will show you the printable parts for, but I’d like to make a case for my iPad and other tablets, however I want to be able to prop it up and for it to be stable. This is designed with my cases in mind, and it has the clearance to lay flush with the back panel.
End goal is to have this embeded in the back so I can prop it up landscape, while I have another in the sleep cover so it can be propped up portrait, like an easel.