I find it really interesting to see how many times you redesign and reprint something. This goes to all those millions of parts out there that one can buy and download for next to nothing. I have always said that the design is the thing, and all this work really proves the point. It is no wonder that sites like Shapeways eventually fail; 99% of what they sell just isn't good enough, even at a price of $0. Even if Shapeways is resurrected in some form or other, sites like that, and dozens of others, really need to have a system where designs are checked, double-checked, and tested, before they are allowed to be sold to the public. I honestly wish I had the time to design such a site. Perhaps when I "retire", whatever that means.