This cleaver bit of engineering means that two boxes fit one inside the other and the reverse.  The performer opens a box clearly marked “Outside”, removes a second box marked “Inside”, opens that one and places the fits box marked “Outside” inside the box marked “Inside”.  Proof that the world dosn’t work as we think.  With the addition of 3 different coloured 3″ sponge balls, this can be used as a Para-Box.

Easy to perform these boxes are tight-fitting and look nice.  Very easy to build they come on a single sheet of 3mm birch ply with instructions to build and perform the effect along with sandpaper, glue and wax to help with the building.

Can be used as an intriguing way to present another small object or present.