Hi Rafael!
Welcome to Thor community! I’m glad you liked this project that much!
You are right, there are at least 2 or 3 versions of Thor and it’s not clear what is the last version or the amount of pieces you need to print.
I’ll work on it soon, meanwhile you can have an idea looking to the Files list on the Hackaday post. There I have commented the amount of each piece and component.
Hope it helps!
Ángel LM