Startup / Business feasibility

I know there is a lot of texts out there talking about "how do you know if your idea is feasible". But i would like to know if there is any way i could check if an idea is feasible. The idea is to create a product, so it would need to be produced, mounted, shipped, and stuff like that. So my two questions would be, is there any way i could check the feasibility of this idea without overexposing it? And if it's feasable, how would i go after sponsorship to the idea?

Thank you