The Trick that Fooled Houdini is a great one.
Isn't that just exposure?Isn't that just a bunch of !?$%#&*(@!!?@$#
You can have a spectator select a card, and have the back signed, and then do the same to another spectator, and you can fuse the two signed backs into one card with the double backer.
I wouldn't waste my double back like that.
It's a great effect, for me, that's worth losing a double back.
However, you can use an erasable sharpie, erasable pen, magical ink, invisible ink, or even a pencil, so you won't have to waste the double back.
Cheers,
JTM
Where would be able to buy an erasable sharpie?
I'm not sure about an erasable sharpie (you could probably find it on google, or on the internet), but erasable markers, such as the Crayola Erasable Markers, can be found at Amazon.com, Office Max, Staples, or your local stationary store.
On a side note, rubbing alcohol, not the drinking kind, and Mr. Clean's Magic Eraser remove sharpie marks, as long as it has been written within a few hours.
Cheers,
JTM
Alright thanks, i'll expierement with some stuff.