Here is another instructable using origami:
http://www.instructables.com/id/Casting-with-molds-made-with-paper/[https://3c-lxa.mail.com/mail/client/dereferrer?redirectUrl=http%3A%2F%2Fwww.instructables.com%2Fid%2FCasting-with-molds-made-with-paper%2F]
