See these threads for some background:
https://forums.autodesk.com/t5/design-validate-document/fitting-flat-head-screws-to-countersinks/td-...
https://forums.autodesk.com/t5/design-validate-document/how-do-i-join-two-chamfered-surfaces-to-each...
What is needed is a way to use the theoretical vertex of cone shaped objects as a point of reference for modelling and joint alignment. A simple use for this would be in joining flat head screws with countersunk holes, such that the screw head stays in contact with the countersink if the hole size or countersink diameter/depth are changed. There are ways to do this now but none of them are very efficient. There are potentially many other uses for this as well.
C|