You could try reaching out to Formlabs support to see if they offer replacement packaging, but if not, you might need to create a secure alternative yourself. The original Formlabs packaging is designed to protect the printer with custom foam inserts, so if you don’t have that, I’d recommend using a sturdy double-walled box with ample cushioning (foam, bubble wrap, or custom-cut inserts) to prevent movement during shipping.
If you’re looking for custom packaging solutions, there are companies that specialize in protective shipping boxes for fragile or high-value equipment. Custom foam inserts can be a great investment to keep everything secure. Have you checked with any local packaging suppliers or looked into custom-cut foam options?