Please bear with me. This is all jumbled in my head and I'm trying to make it clear to myself and you at the same time.
It all started when I wanted to make a gaming table for playing X-Wing Miniatures. I decided to start the process of making a Death Star table in acrylic. Not wanting to use a 2-D image and being no whiz at 3-D modeling, I scoured the internet for a model that Shapeways could print that would resemble the Death Star. I stumbled upon some files someone had downloaded, modified and converted to Blender format. I took them into Blender, broke them apart and converted each piece to OBJ format which Shapeways ingested and digested into itself.
So here are the steps involved:
Someone makes a popular sci-fi movie
Creators release material for fans on how the Death Star was made
Fan creates a 3-d model in one format and posts it online publicly
Another fan takes and tweaks it in Blender and posts it online publicly
I download it, load it into Blender, break it apart into components and save as OBJ files for Shapeways to print out for myself
Here's the question (FINALLY): what happens if I try to sell the pieces?