Instructables

How to convert a plain G-Shock DW-5600 to a negative display

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Step 5: Removing the factory polarizing film

Picture of Removing the factory polarizing film
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The next thing to do is to remove the polarizing film that is glued to the surface of the glass. The film is slightly smaller than the glass and can be seen easily if you look close up. I am using my scalpel to gently lift up the polarizing film a bit at a time. The trick is to slide the blade between the polarizing film and the glass.

Take your time and work from one edge of the polarizing film across to the other, slowly pushing the blade of your knife under more and more while still moving it from side to side. Eventually you will have the blade under far enough to lift off the polarizing film.

The film is stuck to the glass by a thin layer of tacky glue. It's pretty nasty stuff so be patient and it will come up eventually. Lift off the polarizing film using your plastic tweezers. You can see that the film looks almost transparent while over the display and the digits are only visible on the parts of the display that are covered by the film - it's quite amazing.

Here's where it gets very cool. Simply turn the polarizing film around 90 degrees and as if by magic the digital display becomes reversed! The polarizing film does not need to be in contact with the glass to work.
 
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