I don’t know about their ‘fluff’ on 3-D printing, but I know that where I work, we use it a lot for prototyping. I don’t think that it is very effective for bulk manufacturing… too slow. You build up layers by 1/20th to 1/100th of an inch.. even smaller in some cases.

In terms of Motley Fool themselves.. I tend to find the quality of their ratings to be ‘all over the place’.. and things tend to be more hyped these days, than factual. Don’t ignore them completely. Too many people follow them.. so consider them the leaders of a ‘herd’.. not necessarily that the direction of the herd is correct.

Also.. don’t forget that ‘moat’ is important. For 3D printing.. the following might put things in more perspective: http://en.wikipedia.org/wiki/RepRap_Project A DIY 3D plastic printer…