Where can I get more 3D-objects?
You can download a lot of 3D-models here:
http://www.iitvr.com/meshes.html
Why I need to adjust depth of 3D-object?
Depth adjustment is highly recommended for creation of realistic stereograms.
Can I make my own depth-map?
You can easily do that in any graphics editor.
You must to make any grayscale image. For example white text on black background.
Why it is not recommended to set printer rendering resolution greater than 300 dpi?
You can do that only on fast machines with a lot of memory.
Printing process is very slow, why?
Try to decrease printer rendering resolution in EasyStereo settings window (not in your printer configuration dialog!).