This model should print fine with whatever default settings you have. No supports needed. The lid is set up with ~0.2mm clearance so most printers should be fine with this. If you run into tightness problems, try either sanding the edges of the dovetail (on both the lid and the body), or scaling the lid down by a few fractions of a percent across only the narrower dimension (X, generally - across the lid).
If you run into trouble opening the lid, slide your thumbnail or something else thin between the lid and the body where there's a small cut-away to lift the detent so that it can clear the wall.
If you'd like to modify the model, the CAD is available on OnShape.
The author marked this model as their own original creation.