This lock was designed to be printed without using supports. it is a functioning lock although not very secure. works with a specific skeleton key (http://www.thingiverse.com/thing:2211277)
to help it print without supports, I removed the registration on the parts and solely relied on ABS Cement I picked up at the hardware store.
printed with ABS plastic and sanded to make the connections perfect and to remove layer marks.
Painted with acrylic gold and black paint.
No need for rafts on any of the parts!
I sanded using 120 grit sandpaper and filed faces and corners with diamond needle files.