Bill Adams The World of Magic: Bionic Block

This is an amazing mechanical prop.  I will never forget the first time I handled one of thee many years ago.  I did not know what i had (no instructions) so i threaded the cord and played with it for a number of minutes trying to figure out what it did. All at once the cord melted right through the block leaving the block in my hand!  I was not sure what had just happened.  There is a lot going on with this block and they are very difficult to make as stated in the instructions.  It is the perfect block off cord expertly made by Bill Adam’s The World of Magic.  Never used. With block, cord, bag and instructions.