STL to STEP Conversion

I have an STL file containing a single mechanical part that I need converted directly to a STEP file compatible Xometry for quotation. The geometry should remain exactly as-is—no dimensional changes, feature edits, or added details—just an accurate, watertight translation.

Please deliver:
• One clean STEP file verified to open in Xometry without import errors.

If you typically validate conversions with tools like SolidWorks Import Diagnostics or similar check utilities, that would be a plus and will speed up acceptance on my side. Once the file loads flawlessly, the project is complete.