as I have a new puter ,
I retried Dazz
I wondered why it is free , but now I kow :
you have only a model and , so , you must buy all .....
but I exported one model in obj ,
20 MO ...
then converted in wrl 2.5 MO
as I re instaled BS for some other reasons , I saved these videos
( it is a good feature in -stupidlogo -BS