MagSafe for the Rest of Us: A DIY Magnetic Power Adaptor

Step 3 Build Your Center Power Pin

Now we will build the pin that will allow power to reach the center pin connected to the socket on the laptop.

First find a nail thats width is a comfortable fit inside the hole in the power adaptor. It should fit tightly but not require too much force to push in. Also the head should be large enough to provide a good contact surface while being small enough that it fits inside the magnet rings without coming in contact with them. The head should also be flat and the nail must be made out of a conductive material.

When you have found the perfect nail cut it to a length that will fit flush with the end of the power adaptor. It doesn't have to reach all the way to the back of the adaptor nor should it, just cut it so it will sit inside a ways and make contact with the internal connectors. 

Press the nail head flush with the adaptor and your power adaptor is complete.

When you are sure it all works epoxy the back magnet to the washer/plastic of the adaptor plug, the rest of the magnets will stay together by magnetism.