Axi-Symmetric assembly

Does anyone know of an efficient way of creating and converting 2Daxi-symmetric layouts of assemblies into SW files? I work with aproduct where 95% of the assembly of 10-15 parts are axi-symmetricso the creation and layout of the product is done very efficientlyin 2D.So my question is if there is a good 2D module where eachlayer (part) can be imported to SW to create models.
SolidworksSketching