Quote:
Originally Posted by Temper Metal
I would have to agree with others when they say to use the rotated work plane with extrude.
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An angled work plane is perhaps the easiest, most direct approach. However, I would discourage the use of boolean subtraction (cutting a hole with an extrude command). The power of programs like Inventor and Solid works is that the models are parametric. By using a hole feature and constraining it's position with relations and dimensions, you can quickly and easily change the size, location thread treatment and depth of that hole, among other things. An extrusion is less flexible.
The rule of thumb is that if the hole is going to be drilled in some way, use a hole feature. If it is innate to the part, like in a casting or forging, use a cut hole (extrusion).
-Andy A.