The new iMac features an edge-to-edge glass. This is different from the 4 mm aluminum bezel that surrounded the glass on the previous iMac. Hopefully Apple's got some pretty strong magnets to keep the glass where it belongs. After upgrading the RAM in our iMac, we noticed the glass was slightly out of alignment on one side.

Two suction cups, two steady hands, and the enormous glass panel lifts up.

Hopefully you're not following along at home, as this can be a little tricky. If you do have an older iMac that needs surgery, we now have detailed repair guides for many iMac models.