I'm planning how to build/design the side panel door for my case mod. I was thinking of using an electromagnet + magnet to close/open the door. Place a magnet in the door and an electromagnet (off by default) in the case with repelling poles facing each other. With no power to the electromagnet, the magnet would be attracted to the magnet - keeping the door closed. But, when power is applied to the electromagnet, it would repel the magnet - pushing the door open. I only want power applied to the electromagnet while the button is pushed. Will this work? If so, where can I get an 12 volt electromagnet that I can connect to my PSU? Ideally, I'd like to use one that's between 1/2" and 3/4" diameter. I was thinking of using a rare earth magnet for the magnet. I believe I'll need a momentary switch to only apply power while it's pressed. I located one electromagnet that looks like it would do the job. Holding Value: 6 Part Number: ER1-071 Diameter: 3/4" Length: 1-1/4" Thread: 10-32 Volts: 12 Watts: 1.44 Weight: 1.7 OZ Price: $29.00 Thoughts? Thanks for any help/advice.