So, I was just wondering, are there any rights issues when it comes to making a Homemade designed by someone else? I really haven't built one yet but let's just imagine that I have and would like to mass produce a particular design and sell them. (By mass-produce I mean hand assembly, not factories).
Let's say I wanted to build RainbowPups. Do I owe anything to Ryan? Any royalties for using and selling his design?
I await your responses, and remember, this is all hypothetical, I'm not in any shape to be doing this for a looooonnnngggg time.
Legally, you don't owe squat unless there's a patent, which is not financially possible for most inventors. Doesn't matter who designed the blaster, if they are selling it, or if they are OK with you selling it. That is a fact, not an opinion, unlike the rest of this post.
It is a good courtesy to at the very least acknowledge the inventor where the blaster is sold if it's a close copy. It would also be courteous to offer a small royalty to the inventor. But small is the key word here, and really only if it's a close copy - For instance, Ryan never offered Stark royalties for rainbowpump sales because the blaster was mostly Ryan's design, but he did offer Captain Slug royalties on +bow sales (Captain Slug declined because he is a super classy guy).
Another factor is the originality (Sort of kind of patentability) of the blaster being copied--A couple people have asked permission / inquired about royalties to build HAMPs commercially (Pretty sure nothing came of it) and I told them they could build and sell as many HAMPs as the like. It's not a sophisticated, new or interesting design for toy guns, but I happen to be the guy that first wrote instructions for it on the internet. However, if someone wanted to build and sell Aabows or ESLTs with the exact same design that I use, I'd probably want for a buck or two per blaster.