Kifuda "Open" tag

I made a case to replace the shell on the 6 button rfid holder found on Aliexpress: https://www.aliexpress.com/item/1005006655769213.html

There are 2 options, I find the center of the kanji works better if it's attached to the outer case, and not the floating buttons. I left a .4 mm gap so you can comfortably switch colours for the inside face of the lid. (I used cura, extensions => post processing => modify G-Code - Add a script => Stop at height (use the layer that small ledge on the outside edge cuts in on.)

I heat inset a m2.7 nut and use a 4mm screw on the one side. In combination with the pressfit, a split-key ring holds the other side together nicely.

I sincerely hope this translates to "open". I've been using this successfully for the last month without any issue. Toronto Presto, (Mifare desfire) HID iClass DP, my apartment fob (T5577 on an indala reader) etc all work without any noticeable interference.

pics incoming shortly.