mohammad if youve used this tool i have some questions; 1. how long is the free trial in reality? is it like winrar where the free trial lasts forever with basic functionality?
if not, what level of performance is needed for the import/export you are talking about? Basic/advanced/premium?
regarding the trial i don`t really know, i use to use there free viewer, its free but limited to one object and not supporting all 3d file format and there is no saving, but will explode any stl file.
i download the trial version yesterday, i think they are very strict regarding trial time.
the problems in the DLN remind me of those old stuff i'v been using so i went there and download just to make sure not to make mistakes.
i found the program very useful for many small things, and very easy, need only a very little 3d experience, if you have played red alert before you might find it much easier
i use it basically for measurements and to check parts of the file, i can explode but not save with the free viewer.
the functions of this software is very limited but yet its still very nice and handy.
you try it will not take no much time to check, if you like to keep your trial period for later need,
then go for the free viewer. when your ready take the trial.
best wishes