guy n. cognito said:I don't believe these would be applicable here.
They could be if GB had legalled up the first release. if you invent something you generally have some rights to it. Afaik tons of things in all different areas use public licenses that do things like requiring you to give credit or release your mods etc.
See bfms model for an example. If I start selling jack112s when I'm not an authorized builder I could easily be legally liable.
Not dating don is just noting it is more than possible to release plans under a license.
When GB first released his he was pretty specific about no commercial use. I didn't think don applied because he wasn't mass marketing them but opinions vary on that.
Sorry for repeating this drivel ; the whole subject is like cyber reflux IMHO.