Here is another great free video webinar by Tyler Reid of GoEngineer. It is a half hour long presentation of relations of 3d printing and injection molding mostly for industrial application. Very interesting and useful even if it focuses on Stratasys polyjet technologies.
For previous webinar and more similar content go here
Here is a new webinar on 3d printed jigs and fixtures:
Here is the new version of the webinar with more new information:
Here is a new installment of the webinar about various types and applications of 3d printing and molding: