Duck Walks With 3-D Printed Prosthetic Duck Foot Jul 2, 2013 17:14:03 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Vierotchka on Jul 2, 2013 17:14:03 GMT -5 Buttercup the Duck was born with a bad foot. This video shows him walking for the first time with his new prosthetic foot-- printed on a 3-D printer.