Require a Recessed Countersunk Hole?
The Hole Tool in Inventor 2018 has received a new option, that new option is the “Extend Start” tool.
If you have created holes that are not perpendicular to the start plane, you will have noticed a fragment of material left behind in the hole.
See an example of this below;
Here’s a section view of the Hole showing the fragment.
Use the Extend Start option to remove the fragment.
Use the ‘Extend Start’ option to create Recessed Countersunk Holes.
This is made possible using the Extend Start option.
Make sure you start the hole feature based on either a sketch or work points that are offset from the material surface.
My example shows that I created a work surface inset 2mm from the top of the material to host the sketched hole center points. The hole tool identified the points and using the countersink option I created the hole as below. This hole has the Extend Start switched OFF.
Switch Extend Start ON to realise the required hole; Recessed with a Countersink.
You can read more about the new option in Inventor Help Files;