: Inaccuracy using pathfinder "substraction" in illustrator 2015 CC I've a problem using Illustrator 2015 CC pathfinder tool (substraction). I've a black round shape and a vector logo in white. I

@Murray976

Anti-aliasing.

When a white object is on top of a black object, it is anti-aliased white to black. Effectively increasing the white edge slightly. When you reduce white on black, Illustrator tries to maintain the appearance of the white object against the black.

When a black object has a hole in it (counter), it it anti-aliased black to transparent. Effectively increasing the black edge slightly. When you reduce black art with a counter, Illustrator tries to maintain the black art, not the counters.

The only real way to compensate for this variation is to increase the white objects thickness slightly before using Pathfinder. Or, work at a much larger size so that visually the anti-aliasing isn't a great factor.

This is often a reason why adjusting artwork for smaller sizes is necessary.

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@Berumen635

Make sure white logo is grouped, no stroke and expanded. Now subtract. If the problem persists add a 1 px stroke to logo, expand and try the subtraction again.

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