sldprt to jt conversion essentially represents the export of content between SolidWorks and Siemens' JT format. This can be incredibly difficult to achieve due to the proprietary nature of both of these formats.
It is very likely, that the only way to directly achieve such an export is through expensive conversion solutions. The only alternative is to use exchange format to facilitate the data exchange, but that would require access to both SolidWorks and any of the few tools that support JT format.
Updated: February 19, 2024