It's surprisingly good and surprisingly awful all at once.

It’s surprisingly good and surprisingly awful all at once.
http://www.youtube.com/watch?v=k0WFiptizVI

Seems fair. The min temp disabled would definitely fail ul, a single point of failure would cause a fire. It therefore isn’t single fault tolerant. I am not an expert in ul, but I believe that a single fault cannot lead to an unsafe operation. If detected and the system moves to fail safe that is fine. Then 2 faults would be required to make the system unsafe, the user should be aware that the device stopped working during the first fault and discontinue use of the product.

I agree that marking it as compliant and not actually being compliant is reason enough not to buy a product.

Just a quick update (because apparently the title doesn’t seem to update here): Turns out this is not just a rebrand, but an actual clone of the Wanhao Duplicator i3. Which is funny, because as far as i remember, Wanhao only got big because they were making Makerbot Replicator clones :wink:

“Somehow it made it here because… China.”

That is, by far, my favorite line in the whole video. And is an extremely good explanation of so many cheap things we get in the west.

Yeah, clones of clones are typically not good quality. In order to compete on price below a cloner, the re-cloner has to cut quality somewhere. CTC’s FlashForge Creator clones are another good example.

The original Di3 had some unnerving design decisions too, though maybe not as bad. Like the hot nichrome hot end wire going all the way up to the X carriage cable chain? Eep. People complained about that wire heating up and softening filament before the filament even got into the extruder drive.