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I have lot of objects which are bounded by opacity mask.

I need to get rid of my opacity mask, clipping each object where it intersects with my mask. It is a lot of hassles to do it manually.

Is there some other easy way? Some automatic clip of all objects?

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Object -> Expand is not working with opacity masks. And looks like not trim object with clipping mask as well. Solution is not found yet. Please remove the dublicate mark, question are different. – Vnovak Jun 1 '14 at 11:48
Reopened.. but you can't trim or clip opacity masks. Opacity masks other than the flatten the objects. – Scott Jun 1 '14 at 14:15
Ok, btw, in CC I can't even "expand" usual clipping mask (Ctrl+7). Is this version sensitive? – Vnovak Jun 1 '14 at 16:32
Release the opacity mask, make a copy of it, trim the underlying objects with the pathfinder, reapply the opacity mask – GoofyMonkey Jun 11 '14 at 17:39
Generally opacity masks are used with gradient fills. Does yours? Or is it a solid white/grey/black? If it's solid, are you familiar with 'regular' clipping masks? – MG_ Aug 8 '14 at 8:00

Building on what GoofyMonkey suggests:

  1. Release the opacity mask. Cut it.

  2. Group the underlying objects or combine then using the pathfinder tool that unites areas.

  3. Paste the object that was formerly the opacity mask back into the composition. Use Paste in Front to ensure it's on top of your other objects and in the same position.

  4. Use the pathfinder on the 2 objects (the single group of 280 objects + the former opacity mask).

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I just answered this related question here

They wanted to 'crop' (or minus front using pathfinder) multiple objects at once.

Below is my example of 3 ways to 'crop' objects.

3 ways to 'crop'

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Not with opacity masks. – Scott Sep 7 '14 at 15:24
Stated above @Vnovak says "I need to get rid of my opacity mask" - It sounds like they just want to clip many objects at once. So my solution should still work if an opacity mask is not needed. Perhaps the question or title needs clarification. – Eddie A. Sep 7 '14 at 16:24
Please explore your method with an opacity mask. Pathfinder will not work. As @CharlesB mentions in his answer, the opacity mask needs to be released, then reapplied. You can't simply use pathfinder on opacity masks. – Scott Sep 7 '14 at 17:16

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