http://www.denfordata.com/pdfs/lithophane_tutorial.pdf
I found this on the iinternet if anyone is interested in lithophanes
http://www.denfordata.com/pdfs/lithophane_tutorial.pdf
I found this on the iinternet if anyone is interested in lithophanes
http://william.bowen.com/:)
("There is a principle which is a bar against all information, which is proof against all arguments and which cannot fail to keep a man in everlasting ignorance-that principle is contempt prior to investigation."
- Herbert Spencer )
Thanks Bill