September 11, 2016
Description
This is an old magic trick. Put in a quarter and slide it into the disappearing coin trick and - 'Abra Cadabra' - it's gone! Slide it in again and it's back! Magic!
I used pink to show details better - use a black or dark filament to hide the 'magic'.
Note: Print the slide first and trim to size. Then when printing the 'Inner Box' at about 80mm or so, pause the print and slide the 'slider' in so it is captive.
License:
Creative Commons - Attribution