Fact is, everything has already been done. So no matter what he makes by himself in his shop, someone else has already done it.
If you go out build a bumper, or a barn, or a trailer, no one gets on your ass for copying someone elses chit do they? Just because someone built something that works doesn't mean he's the only one that can ever make that piece. You guys should be glad he's showing what he's doing and how, and pray he sells what he makes, because I'm sure it will be cheaper than buying it from anywhere else. And what happened to the days when it was cool to build your own chit?