IMHO you have to admit that the build quality leaves much to be desired. Just look at the eval board from Linear for the LTZ1000. It is very hard to prove that the DC-105 offers the quoted performance. Perhaps it is adjusted properly to a certain level of accuracy and it has some temperature compensation (judging from how the copper foil looks it appears the thermal link is 'tuned') but it seems to me that it does not get rid of long term drift and/or thermally induced offset voltages.
All of that is OK as long as the seller doesn't start to pull a whole load of BS from his ass. He could have sufficed to say that he doesn't want to disclose the inner workings. Some may accept that and others don't.
I'm not lying about anything. It's possible that I'm unfamiliar with certain terminology, or that I invent new terms as the need arises. Why would I resort to lying if my claims are real. There wouldn't be any point. And if I was a scammer, it would be obvious from my feedback on eBay.com. The units are handmade. They're not going to look as tidy as machine-made boards. But the people on this board who are picky about soldering remind me of my second-grade penmanship teacher who paid no attention to content, but only to how pretty the cursive was. She could have been reading Einstein's theory, and even though it revolutionized the world, if the penmanship was marginal, it was worthless! She told me that erasers would grow out of my fingers, because I erased too often.
That's called smallmindedness, and it applies to soldering also! Fortunately, I pay little heed to it. The devices work, and if people don't want to look at the solder joints, they can just use it as a standard instead of taking it apart! I'm working on a board. But Rome wasn't built in a day! There's a lot involved in designing a board and then testing it. The one I have now works. There is no guarantee that any other design will work as well, or even close to what I use presently.
Flat conductors build up capacitance that can be problematic. But I know one thing: problems increase exponentially when people fix things that aren't broken.
Unlike others, I assume that I know nothing; that I
am nothing! To me, everything is too complex and infinite to ever be comfortable in understanding anything. That leaves my mind open to receive answers that others have no access to. I attribute my success to
knowing nothing. People who know everything are unable to receive anything new, because they don't need it. They already know
everything!
I'm not referring my entire reply to the author of the quoted post. This reply is useful to anyone using this board. The invention is fairly new. There is no long-term data beyond 2,000 hours. For that reason I make no claims regarding it. Data takes time to gather. Give me a break! I'll put it in the item description as I get it. I appreciate the feedback if it could be at least as polite as the post I have quoted above.