Ever need to disassemble/deconstruct/separate the Hemma's components to feed just the wire through a lighting project? Instructions to do so couldn't be found on the Internet, so I tackled the project and am sharing in the hopes that it helps others with their projects!
The point of this Instructable is to demonstrate how to pull apart an IKEA Hemma Cord Set into its separate components. Once this is done, you'll be able to feed the electrical wire of the cord set through much smaller openings/holes than the cord set normally allows.
Step 1: The Tiny Tab that Keeps the Head Together
Inside the socket, there's a small golden metal tab. This tab creates the electrical connection with a light bulb (when one is screwed into the socket). For now, though, this tab is keeping us from being able to unscrew the head of this fixture.
Insert a slender screwdriver between the end of this tab & the side of the socket -- then pry the tab upwards just enough to ensure that the tab is clear of the ribs on the inside of the socket.
Step 2: Unscrew the Socket Head from the Socket
Step 3: Remove the Socket's Inner Components
Remove the electrical connection part of the base (the black plastic part that makes contact with the bulb) by simply pulling it outwards with your fingers.
Then, use a slender screwdriver (or similar instrument) to pry the rest of the components out. The white tabs through which the wire feeds are held in place by pressure against the surrounding socket. They should come out with a combination of prying & pulling. Shouldn't be too difficult.