Convert SLDPRT to X_T

You can convert most CAD formats between each other if you first export the original to some exchange format like DXF or DWG and then import that to the other CAD program. In this case sldprot to dxf and dxf to x_t for example. Other than that, you can also find dedicated CAD converters like the CrossManager that can directly convert from one format to another regardless of vendor.