How to Make a Wall Clock Run Backward and Keep Time

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This is a great project for those of you who want to go back in time. In a few simple steps, you can make any clock run backward, forcing the hands to tick off the minutes and hours from right to left, or counterclockwise.

Things You'll Need

  • Small scissors
  • Clock
  • Use a small pair of scissors to move the clock shaft out of the way, so it doesn't press against the gears.

  • Remove the back of the clock to expose the gears. Remove any knobs or other adjustment devices off the back of the clock before taking off the cover. They will spring off the back of the clock if not removed beforehand.

  • Pull the gears up and out of the clock, setting them down in order. The leftmost gear counts minutes, the middle gear counts seconds and the right and small gear moves the hour hand.

  • Slide out the plate by working it up and off the pins that are holding it inside the copper-wound electromagnet. Be careful not to pull at the copper-wound device.

  • Flip the plate over, and put it back under the copper-wound device. If it doesn't fit, you can cut off about 3/32 of it at a 45-degree angle, and then flip it over and put it back in its original position.

  • Replace all the gears in reverse order, making sure the smallest is pointing up to align with the back cover.

  • Replace the back cover and reattach all of the adjustment knobs.

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