natsucielo

Hi, I'm new to Cura and recently while trying to print a chair for my set design, I have encountered some problems. I downloaded the model from grabcad. Link to image: http://prntscr.com/a116v0 1) What is the grey square my model is resting on? Is there any way to get rid of it? 2) Is there a reason why the estimated time to print is this absurd? It is a 4cm chair with quite a bit of detailing, I don't think it should take this short a time to print. 3) It seems that my model is not resting on the plane flat, is there any way to lower the model so there is no gaps between the bottom and the base of the space given in Cura?