This is an excellent design, but my micro SD cards of various kinds all fit slanted. It fits the card until it gets to the "spur," where it stops. Since the cards can't fit in the entire way, the lid can't be screwed down the entire way. Well, maybe it could, but I'd break the cards if I did so.
I'm going to try printing this in another PLA and see if that works better for me.
I have no problem with getting cards in and out.
Thank you very much for designing and sharing this!