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Rainbow Roller is a roller that paints instant rainbows. Instead of painting a single color, the rainbow roller blends 10 colors placed in the VIBGYOR order into a beautifully blended rainbow to help make everything a part of fantasy-land themed world.

One day while just surfing around on the internet, I came across the nyan cat GIF leaving a trail of rainbow in its wake. That got me thinking about how to do the same in the real world. After a bit of trial and experimentation with different types of sponges and paints, I managed to create the rainbow roller as I had imagined it.

To celebrate same-sex marriage legalization in US, Facebook provided an option of changing your profile image to rainbow hues which became quite viral. So inspired by that, I tried using the rainbow roller over printed images and achieved the same effect in the physical world.

More info: instructables.com

1. Measure And Cut Acrylic

2. Assemble Paint Box

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3. Glue Sponge To Box

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4. Attach Roller

5. Attach Metal Rod For Support

6. Prepare Acrylic Paints

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7. Pour Paints And Make Rainbows

8. Use the Facebook’s CelebratePride profile picture editing on physical photographs