face up keychains requires alot more work than you think it isnt a easy convert to stl etc ie say a average line in a photo pic etc is say 2 pixels wide for the black to c through layers every line has to be a minimium 8 pixels to draw where you can still c it so alot of keychains have to be completly redrawn with every line widened,where as face down you can get that 1 pixel