First, I had to create a loop out of the brass, as close to the size of the KeySmart post as possible so it wouldn't move.
Now I made it into a "safety pin":
Now this is the difficult part, where it's easy to scratch your KeySmart. You have to install the "safety pin" and twist it into the clip.
The end product:
- Scratches KeySmart when making
- Difficult to insert and remove
- Rotates slightly
- The other end of the rod sticks out
If I were to make it again, or had to buy material just for this, I'd use brass strip, maybe 2 cm wide and 1-2 mm thick. It'll be really simple to make: drill a hole for the post, shape the strip, drill a hole for the screw (when you bend it, the strip will cover the head of the screw, making it impossible to turn), bend, then final shaping. The only difficulty is the screw head is quite big, so you have to drill a similarly-sized hole (or at least as big as your screwdriver), requiring a pretty wide strip to have enough strength by the sides of the hole.