DIY project

I’m building a 3D Rainbow Arch from scratch

By Published On: October 29, 2025

Want to make your event pop with color and joy? 🌈 In this post, I’ll show you how to build a stunning 3D Rainbow Arch that instantly transforms any space into a picture-perfect moment. Whether it’s for a birthday, baby shower, or pride celebration, this vibrant setup is guaranteed to bring smiles (and lots of photos)!

Watch the video

Want to create a stunning backdrop for your event or photoshoot?

Watch our step-by-step DIY video to learn how to build this 3D layered rainbow arch backdrop! We’ll guide you through the entire process, from cutting the pieces to assembling and painting them for a professional finish.

Measurements

Before you start, here are the key measurements you’ll need:

  • Overall Height & Width: 48″ x 84″
  • Number of Arches: 5
  • Arch Width: 3″
  • Backdrop Depth: 15″

PDF files

Materials & Tools Needed

Materials:

Tools:

We are here to help!

If you are struggling with your new piece of art, we are just one email away!

contact@miamieventdecor.com

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Written by : Mark

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