Artist Jim Gurney was interested in Cory's post about the woman who applied makeup to half of her face, and he did a split-and-flip on both sides of her face.
A few years ago in MAKE, Charles Platt wrote a short tutorial on how to flip faces.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects