Duplicating House Keys Credit Card (Remix)

I was printing a house key from nrp's post http://www.thingiverse.com/thing:8925 for my wife. Of course she said, "No not like that, AAA gives them to me in a credit card so I can put it in my wallet" so I made her one. Then I though some others might want that too so here we go.

This is currently only for kwikset locks, in particular kw1 keys but I do plan on adding Schlage and others I find so I will keep it listed as a work in progress for a bit.
EDIT - no need for me to add the Schlage