Posted by gouessej on Jun 27, 2014; 1:24pm
URL: https://forum.jogamp.org/STLLoader-tp4032481p4032499.html

No I'm not alone, there are about 750 people registered here but it's not the best time of the year to get some help.

Maybe this article can help you but it seems difficult to do exactly the same in your case:
http://stackoverflow.com/questions/9020783/java3d-universe-size-is-too-small-to-fit-object

Look at the paragraph 9.4.1 here:
http://www-evasion.imag.fr/~Francois.Faure/enseignement/ressources/java/j3dguide/ViewModel.doc.html
"a scene graph for a simple application that draws an object in the center of a window and rotates that object about its center point"
It seems to be what you're trying to do.