as discussed by email
convert to the former IGS format with skin, not just wire frame.
manufacture cant open the current format, but can open your old one.
also, you think you can export into the PDF 3D model you did before too? that was really easy to review for me.
i had to choose a price for the project, i put $40 based on your posted $20/hour and you saying it would take 2 hours. hope that works!