For all my English speaking friends, here is the detailed explanation of my effect TNT III, which is an interesting version (and so far the most advanced version) of the “Signed Card in Sealed Envelope”. This is totally practical, and will fool some magicians.
This concept enables you to steal and load a signed card into an envelope which has been in full view all the time.
The signed card is placed into a clear box with a lid, this is placed into a larger carton box with a lid, and all is encircled with a rubber band. Still, you are able to extract the card.
The load into the envelope is done in full view, and can be used without the box steal, as well.
Easy to do, but you’ll have to construct a few things (don’t worry, you don’t have to be an engineer to do this).
Video download, mp4.