How I learned to stop worrying and love Ldraw. (Subtitle: questions for programmers)

[Willy Tschager]

-Legally: Can "The Lego Group" prevent me from selling an app I make (provided that I do not use their trademark)? If I want to use the ldraw parts library, what's the recommended way to share it? It seems that, aside from parts/756.dat parts/s/2336s35.dat, I could distribute the zip myself. (Edit: nevermind per #2. I see there's a link for CCAL-compliant parts).

Please read:

http://www.ldraw.org/article/281.html#2_..._a_program

and also:

http://www.ldraw.org/article/227.html

On a personal note I'd like to add, that you might author a simple part (there are plenty to pick from Duplo) and get it certified through the PT before you start charging for an app - just to get a feeling how much effort the 100+ part authors have put into the creation of a 5000+ parts library offered for free. Or read the last sentence on this page.

w.