Scaling STL's, Using negative part, does scale apply?

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So, I'm using a negative part to one of my STL's and seems like even though I scale before added the negative part, the scaling is applied to both. If this is the case (pretty sure it is), how can I scale an STL, the apply a negative part without this happening? You clearly see the model's do not match. Driver was scale down to 92%, seat stl is unaltered. https://preview.redd.it/enu23z52couh1.png?width=1689&format=png&auto=webp&s=cecb7b7406d975b0bf642474e0c7225b5e714720   submitted by   /u/SluggoV2   to   r/3Dprinting [link]   [comments]