Up(p)date (yet again):
So i am practicing a bit of "complete retainment" riffles, i.e. riffles that does not change the order of the cards. The name is actually totally false when it comes to most riffles in this category, since the riffle itself is actually "riffling" the cards together, it is the cut afterwards that does the "dirty work". I'm practicing the push through method which i will describe to you fine gentlemen in the following manner:
Start as per usual, by splitting the deck and doing a standard "closed"* riffle, just make sure that at least one card of the left pile (which should be the original bottom pile) is on top. Now push the two packets slightly diagonally towards eachother. You will soon discover that the two packets will have "passed" eachother, meaning that the corners touching your fingers, when pushed towards eachother, just passes "over" the forward facing corners.
This action is very hard to describe, and a picture would be much better, but whatever...
Anyway: As soon as the two packets have slightly passed each other, squere them up, but only along the long sides, while also covering the protruding cards at either end. Now just pull at the protruding cards so that they separate and simulate a cut. Remember to place the packet that will end up in your left hand on top of the other one, otherwise you would have done a normal cut. This is why the left packet needs to contain the top card, since this will make the cut look genuine.
I much prefer the push through, instead of the more orthodox "strip through", since i think it is more hidden, and fools the eye better.
*The "closed" riffle is just a tabled riffle where the all, or nearly all the fingers are held fairly straight over the top of the deck, so that it is covered almost completely, hence the name "closed" riffle.
This aids the action of making sure that you put a card from the left pile on top.