Inverted Copy- Other Side
 

Hi everyone.
I've created something, and only it's right side.The left side is the same but left :-), how do i do this exactly?? how do i invert something? Rotation won't work since it's an other side!I hope you understand what i say...

And i hope this question isn't stupid...:banghead: :banghead: :banghead: :mad:

Place the object's pivot on the edge you want to be the center. Then duplicate the half and scale it -1 on the axis you want to mirror along...