Ok, so here is a little video i made of the mirror not working then working. I would like to know why it worked. Im confused about reference planes and mirroring i guess.
Why is it, when i select the right plane as my mirror face, that the holes end up in the middle of space? i want them on that face. haha. I then followed the instructions for the assignment and it worked but i have no idea why. Im trying to understand why one way works and another does not.
thanks
EDIT: For some reason, only 5 seconds of the video was recorded by solid works..... ill try again. hold on
Just think of it like a midplane between the features, so if the feature you want to mirror is "x" inches away from the mirror plane, the new feature will be 2*x inches away from the original feature, and "x" inches away from the mirror plane. Sorry if that sounds confusing, it really isn't once you get used to it.
It is a very powerful tool for symmetric parts as you only have to change the original feature and the "mirrored" feature will update itself.