Kitchen sink drainer

I made some measurements and recreated the drainer in FreeCAD.

Two STL files of the drainer, 60mm and 80mm, however you can download the file and input the diameter of your drain in the spreadsheet.

I have created a second drain filter using a provided feature of FreeCAD to do the pattern for the drain holes and used a hexagon.

The shape holding the round ball in the middle you pull on is now based on the size of that ball.

PS. in this updated model if you make the ball 10mm or less it disappears from the model.