Translations:Creating a simple part with Part WB/55/en

From FreeCAD Documentation

Switch back to the Part Workbench and create a cone by pressing the Cone button in the toolbar. Change radius1 to 0 mm and radius2 to 7 mm – this will give a 2 mm countersink on the radius. Making the height of the cone 7 mm results in a 90 degree top angle of the cone, or 45 degree countersink angle. Worth to note is that again one could as well use the Chamfer operation.