Re: Make a hole in a surface
ok bringing it down to just one conic section, and the cylinder.
1) I select the conic section as an object, the cylinder is not turned green.
2) I hold the shift key, right click down and hold on the mouse, box the cylinder, let go of the mouse, and now both shapes are turned green.
3) I click on Object-->Boolean-->Knife and Cut Away I get the error message:
"Knife: 2nd object has open edges..."
see attached.
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