" As the seller, I cannot be assured that the purchaser will exercise common sense when installing the blades, and I'm not sure what if anything I can do about that. I may have to limit, or forego making anything for sale in order to avoid risking losing what I already have. That would be a shame. One advantage of imports is that it is difficult to impossible to sue the manufacturer. If I sell something here and anything goes wrong, I am easy to find and sue, even if the problem wasn't my fault. It could cost a fortune to defend ones self, even if one ultimately prevails in court."
That is a problem, you could always make them then sell as overstocks you purchased in bulk, manufacturer unknown 
Funny thing is such type tackticks are used by big business! I know someone that bought some products that had the Made In China stickers on them. After carefully removing the China stickers they found Made in USA stamped into the item!
If your not going to do a large volume, sell them as new still in box, or as opened never used. Slightly used like new.
I did that with computers for awhile. I had fun building them but traveling alot I did not want warauntee problems comming up, so I built a system, used it a month, sold it used and parts had a manufactors waunatee still for the buyers if a hardrive or system board went bad or something. If I was around I would fix it anyway for people. Never had much problems, I only use high quality parts.
Need to find out how businesses like FORD protect themselfs from stupid people. I mean if you change a tire on your new car, figure 3 lug bolts is as good as 5 and only finger tighten them, FORD is not resonsible when the wheel falls off and you kill some-one! Why should blades be any different?
If you drive 90mph through a school zone, Chevy is not liable if you hit a kid.
Huh, what if you stick a toaster on the floor and your kid sticks their hand in it, gets stuck and they press the lever down? Is GE gonna pay for the stupidness?
For one thing you are selling a kit! Not an assembled product! It is the consumers resonsibility to assemble it correctly! Not like a window fan ready to use. I think if you bought a wallmart box fan and the blade flies off you could sue pretty easy if it hurt you. On the other hand if you buy the same fan as a box of parts you have to put together you have to prove you did it correctly and it was not your own fault it came apart. Pretty hard to do.
As for protecting yourself, incorporate! Do everything correct and any lawsuits will be limited to the assets of the corperation, yours will be untouchable. It is easy and cheaper than most people think to do this. 2 best states I found so far are Nevada and Wyoming. You can incororate in any state you want, you do not have to live or do business in that state personnally. I think last I checked both the mentioned states had no State Corperation taxes, both were cheap, both allough one person corporations etc.... You can issue stocks or not, your choice, and lots of other good things. You only pay taxes on profits, so you spend the money and pay employees to the break even point and avoid large corperate federal taxes on the profits. By paying yourself and buying the products from your other businesses you are still keeping the money the corperation paid out, but now it is personall income you are taxed on, not corporate!
If the above is anything that will help others, check into it very well like I have and decide what is best for you as not every person has he same needs in such matters. I think the details for about every state is online at the state gov site!
Some states are bad, some good.
Arkansas just went from decent to bad either this year or last concerning for profit corps, but non-profit is still great! $50 fill in 10 blanks on a form you are a non-profit corporation, then fill out a Federal form for federal non-profit status. Easy! But I forget if there is a federal fee or not, I don't think there is.
Something any-one wanting to sell products and concerned with lawsuits should look into. In most cases I would avoid lawers, paper work firms, and any of the other expensive crap, do your homework and do it yourself and it is not complecated nor expensive unless you choose the wrong states where they make it that way, Delaware comes to mind. All states I have checked on allough for resident agents, that's just an in state address where they can serve papers. Many firms provide that service for anywhere from $50 a year up to $200 depending on the firm you choose and the extra sevices you may choose. Some will set up a corperate bank account in that state for you and provide a phone in that state also which will forward to any where you want.
Cost more of course!
I provide such info based on what I have researched and done for others. Do your own reseach if such things sound good to you. E-mail me if you have specific questions or need help with a states info and I'll find you the info to get you started if I have time.
