On-Air Light Box

I designed this ON AIR light box for my home office so I can clearly indicate when I’m working and should not be disturbed. A simple visual signal that works perfectly for remote work, calls, or focused sessions.

 

The box is printed in black PLA, the front plate in opaque red PLA, and the letters in natural transparent PLA, allowing the light to shine through cleanly and evenly.

 

For lighting, I used a USB-powered self-adhesive LED strip 1 meter long (I personally ordered a small self-adhesive LED strip, USB, on Amazon: https://www.amazon.fr/dp/B0BYNM7TZW?psc=1&ref=ppx_yo2ov_dt_b_product_details )

If you don’t find the exact model, any USB LED strip of similar size will work just fine.

👉 The hole at the back is designed to let a standard USB cable pass through easily.

 

I printed the red plate upside down on a textured PEI plate. This gives a very clean, slightly industrial finish on the visible face.

If you prefer not to print it upside down, I recommend increasing top layer smoothing for a better surface finish.

 

Using a very low infill on the red plate helps the light diffuse nicely through the opaque PLA.

Key Features

💡 Clear ON / OFF visual indicator

🖥️ Perfect for home office & streaming

🔌 USB-powered LED strip

🎨 Multi-material light diffusion

🧱 Clean industrial finish on textured plates

🖨️ Easy to print and assemble

 

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