Just designed my own vertical Holobox for Smartphones, based on Pepper's ghost illusion technique. Superb for advertising stuff! Slide in the acrylic glass sheet and put your smartphone on the top. I have also a “horizontal” version just check the uploads on my profile. Think of the possibilities: Interactive, real-time animation of an Avatar combined with AI like Chat GPT, Siri, etc. 😉

Pictures, Animations, Videos etc. that are on black background work best. On your smartphone turn "off" automatic brightness and move the slider to maximum brightness. This version is for vertical product presentation that means your videos need to be vertical i.e. 1080px * 1920px. Best suited for long objects.

For best results you will need a special holographic reflective film. It is attached with water and dish soap to a piece of acrylic glass. With this foil you will get the best results because it also diminishes the double reflection caused by the 2mm thick acrylic glass. The foil looks like a one-way mirror foil but not too reflective. I couldn't find it on aliexpress but I ordered directly from here: http://www.defi-tech.com/holo-film-for-showcase.html If you know of any alternatives please let me know.

Update: Seems like the link isn't working anymore. Best is to try and search online for “pepper ghost holographic foil”.

You can also use only the acrylic glass but you will get a visible double reflection on your projection. What works good too but only in a dark environment is a piece of a DIN A4 transparent film for laser printers. These foils are only 0.1 mm thick and avoid the double reflection. In daylight the projection is pale and lacks contrast because it's missing the reflective coating. If you have any idea on different foils that might work let me know.

Size of the Acrylic glass sheet is 153mm x 71mm x 2mm

(The pictures are all taken with the special reflective film glued to the acrylic glass sheet except the fireball in the dark environment. That one was with the transparent film for laser printers.)

Check out the video to see how it looks like. First clip with the green pcb was made with the special reflective film. The second clip was only with a piece of transparent film for laser printers in a dark environment.
 

Print instructions

Use supports! Project file and GCODE is included.

Remove supports with pliers and use a small nail file on the snap fits and holes to make them fit. I've added 0.3mm tolerance but because of the overhangs and supports you still need to use the nail file a little bit to make it fit perfectly.

Copyright:
All my designs are protected by copyright. By downloading, you agree to use the files for personal purposes only.
This means that you do NOT have the right to sell 3D prints of the digital files, including selling products made from molds.

If you want to sell my prints commercially and legally, you can join my Patreon:
https://www.patreon.com/technerd863

The digital files (STL and other formats) may never be resold, shared, remixed or given away.