http://www.shapeways.com/forum/index.php Shapeways: Bring your creativity to life in 3D http://www.shapeways.com/forum/index.php?t=rview&goto=46229&th=8774#msg_46229
I am new to 3D modeling, and have only been using Blender for a few months. I am also new to 3D printing.

I made a ring in Blender and I think I have followed all the steps on the tutorial page for prepping Blender files.

When I export my .blend file to .stl, I notice it is called a "Certificate Trust List"... which is weird to me since the extension is .stl. Anyway, I upload it to Shapeways and I get an email notification that it is an "Invalid Input File Format", so I did some forum searching and read that I could download "Netfabb" and that it would "fix" any problems. Well I downloaded it and when I try to open my .stl file it too gives me an error "Invalid STL file"

So what the heck is going on? haha

Thank you for reading!]]> Moosh89 2012-03-31T03:32:41-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=46237&th=8774#msg_46237 Mesh lab, Accutrans3D or it may be possible in Blender (I know nothing about using Blender).

]]> stop4stuff 2012-03-31T09:18:53-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=46262&th=8774#msg_46262
Select the option to "always open with this program" and windows will change the file(s) to be associated with Netfabb and remove the "Certificate Trust List" indicator.]]> stonysmith 2012-03-31T23:54:55-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=46272&th=8774#msg_46272 Moosh89 2012-04-01T05:11:17-00:00