The Arms & Equipment in the Civil War Message Board

Need information

What was the normal blade length of a D-Guard Confederate spear point Bowie Knife. Some think 12" some people say 16", we just want one that would be authentic. And I would think it was left up to the individual, and a young man going off to war for the first time might not know what he wanted or what uses his knife might have.
Were they double edged?
We are wanting to get one forged for our camp. And if you know a blade smith please let me know.