Posting a design : is it possible to have some dislaimers acknowledged before anyone uses my design?

Hello, all,

I have finished a 3D- design and I intend to share it (for free) to the (motorcyclist) community. However, I am not at all aware about legal issues I might encounter. Because I want some disclaimers to be acknowledged before anyone starts using this design (whether it be by printing it, using it, or by redistributing it).

Hence my question : how do the 3D warehousing sites compare in this matter ? I never posted such a design, so I have no experience whatsoever if I can have some disclaimers acknowledged ? Or maybe these sites take responsibility for the designs they keep ?