I've just joined the community today!

I wanted to talk about Shade 3D: If you guys do not know this software, it's basically a 3D modeling tool ( you can do animation as well) but the cool stuff is that they integrated a 3D Printing Assistant in the latest version (14),

So this assistant allows you to check and repair your 3D model and to convert it to STL so it is gonna be 3D Printable. I think that's pretty cool, no need to go through another soft to convert stuff directly in a 3D printable stuff ^^ You got a watertight object ready to print!

You can download the free trial on their website, so it really worth it to check it out!

Hope it's gonna be useful for you!