After thinking about it overnight, I find myself facing an ethical dilemma.
The guys on SS who manufacture and sell these adapters - jatonka, for example - have gone through the process of turning a one-off into a product. That is more than setting up the ability to turn these out one after the other.. It includes marketing and a web site and e-commerce software and deling with customers and tire kickers, and dealing with warranty returns and other types of returns. All in all it is a lot of work and no one is going to retire on Deuce oil filter adapters. On top of all this, they are our brothers here on SS. They are fellow countrymen. How many of us do not hesitate to download a TM from jatonka's site? Well, he pays for server space and web hosting to provide that free service. Therefore, whether or not I like the price he charges, I understand the realities he is dealing with and the implications if we do not support our own fellow vendors. (DISCLAIMER: I have nver met or spoken with jatonka, nor have I ever ordered anything from him. I have visited his site and I see he is located in New Youk state.) From this perspective, I would not support sharing the designs for these items on SS.
That's side A of the argument. Side B is that I am the last person on earth to not take apart something I own, to learn how it works, to fix it, and probably to make it better. I love the openness of information that the Internet brings. I certainly have no problem sharing tips and tricks on the Internet; I probably have posted 10,000 times over the years on various forums. I love to fabricate parts, I build whatever I can for my vehicles, do most all of the work myself (and have the ability to do it myself even if I job it out), and get a kick out of carving metal into a better shape. So, from this perspective, I would support sharing the designs for these items on SS.
Now it is a free country, so you all do whatever you want (within the rules of the forum, of course, and since I am not a moderator I have no say in that, either).
I can, however, suggest a gentleman's agreement. Perhaps on issues like this, where we would potentially be taking revenue away from a fellow SS member, we should keep the public forum details general. Specifics could be shared by PM as appropriate.