Clean the disc using a soft cloth and rubbing alcohol. This will remove any residue on the disc, which could damage the disc when attempting to repair it.
Heat your disc to approximately 100 degrees F using your oven. Do not use a microwave oven to do so; this can damage both your microwave and the CD.
Place the bent CD between two pieces of glass.
Place several books on top of the pieces of glass to apply pressure to the bent CD. Make sure the discs are directly above the hole of the CD so the weight is distributed evenly.
Allow the CD to sit between the glass panes for several days until it bends back to its original form.