Hello
I have to make a vacuum effect for this client (the file will be 3d printed to produce a poster, example below). But impossible to have a sharp result, I always have this low definition effect, and when I divide it it makes it even less sharp by rounding it. In short, I’m stuck. 
I asked some help on the forum but nothing really helped me, that’s why I offer some bucks to you if you could show me step by step how to achieve this.
Please don’t hesitate to email me 
