First, you need to prepare the box lid for the Infinity Mirror. Then go to the page for your version to see how to add the electronics.

For this step you only need the lid and the heart-shaped paper liner. Set aside the bottom of the box with the candy in a safe place (away from pets and chocolate fiends).

Make the Inner Mirror

Trace around the paper liner onto the black cardstock. Cut about 1/4 inch larger than the paper liner -- you want the black heart to fit snugly into the lid.

Cut a piece of the mirrored window film a little larger than the heart.

Put the black heart on a piece of scrap paper. Use a glue stick to apply a thin layer of glue all around the edge of the heart.

Place the window film over the glued heart. Starting at one edge, smooth the film down as much as possible. The smoother your film, the better your infinity mirror.

Let dry, then trim the window film to the exact size of the black heart.

You'll need to cut more pieces the same size as the inner mirror, so trace it onto a piece of scrap paper as a template.

Make the One-Way Outer Mirror

For the outer mirror, you will cut an opening in the lid and cover it with another piece of window film.

Children may need adult help cutting the opening.

Mark the Opening

Turn the lid over. On the inside, draw the outline of the opening you need to cut for your version (see below).

  • For the Mini Box: Draw an outline about 1/2 inch from the sides of the box.
  • (Optional) For the Animated Version: To partially hide the ends of the NeoPixel strip, prepare the strip as described here, then trace around it to determine the edges of your opening. (After testing the prototype, I don't think they would be very visible anyway.)


Cut the Opening

For both versions, use a craft knife or scissors to cut out the opening along the lines you drew.

Cut and Attach the Outer Mirror Window Film

Cut another piece of window film the same size as the inner mirror.

Use the glue stick to apply glue to the inside lip around the opening in the lid.

Carefully place the window film heart over the glued opening, smoothing as much as possible.

Next, go to the section that tells you how to add the electronics for your version!

This guide was first published on Feb 05, 2019. It was last updated on Feb 05, 2019.

This page (Build the Infinity Mirror Lid) was last updated on Feb 03, 2019.

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