Hi Pilou, I would have probably recommended asking some additional questions instead of just only asking about OBJ format alone for sending the polygon data.

Probably STL format would have been good to ask about, for example. It's possible they might have been familiar with that instead.

If not then it might be a good idea to use a different service that is able to use the data in its original triangulated form.

But if it worked for you in this particular case then that's great, however it's sort of trying to nail a square peg into a round hole.

- Michael