Bolt Holes

The complete cavity is treated as Dead Area.

Three variations of bolt holes are used in manifold design.

1.     Threaded Bolt Hole
(for mounting components on manifolds and for mounting manifolds)

2.     Through Drilled Bolt Hole

3.     Through Bolt Hole with Counter Bore
(for mounting manifolds)

Bolt Holes

Note:

·       Cavities meeting at the bottom of a flat bottom cavity (cavity with 0 angle in the last step); and an offset hole passing through the flat bottom cavity, does not appear in the meet list of cavity.

·       When you use flat bottom drills inside cavities, instead of making it exactly flat with 0 degree angle, use a small angle, let us say 1 degree, and allow the formation of a very small cone at the bottom to get correct result in design check.
(This is a current limitation.)