This is parametrized Box model. It can be adaped to your wishes by changing the parameters like height, diameter, screwing angle, grip height, and curve parameters. In case you just want a screwable jewellery box I included 3 versions of the box as stl files.
screwing_box.aoi |
screwing_box_perfect_bottom.stl |
screwing_box_perfect_bottom2.stl |
screwing_box_perfect_bottom3.stl |
screwing_box_perfect_top.stl |
screwing_box_perfect_top2.stl |
screwing_box_perfect_top3.stl |