I recently took two different designs and combined them with 3d builder. The file was saved as a .3w, even though I imported into 3d builder as an STL. I know both work with XYZ, but I have lost the ability to add supports.

I'm using a Dd Vinci Pro 1.0. The first time I printed the object, I was given the standard print settings table that allowed me to load my preset ABS setup. I tried a reprint, and the option was not given, and the object tried to print with no support. This resulted in a great birds nest print...

Can I convert .3w to .stl?

Can I change the support options on .3w file?