I use a basic 3d printer (dagoma discovery200) for test my models.
Normally, there is no problem with the stl.
see the model printed on the picture.
the obj and the max file contain all the separated mesh.
the Stl is a single object.
Products under Royalty Free License can be used without liability to pay any license fees for<br/>
multiple lifelong uses, or sales volume of final product after being paid for once. The product<br/>
may not be sold, given, or assigned to another person or entity in the form it is downloaded from the site.<br/>
<a href='/pages/terms-and-conditions#general-terms-of-licensing' rel='nofollow' target='_blank'>Read more</a>