I cannot recommend such a tool, it's pointless. I am really tempted to break the bank, get a JBC and forget about those issues.
So here is my problem with the JBC stations
1.
They recent had the debacle with silently dropping features2.
Quality control issues where the DDE has splattered solder over the unit3.
"Chang" capacitors on overpriced JBC unit4.
JBC unit with a through hole capacitor bodged onto a SMD pad with tons of flux still on the board!What this tells me is that JBC has a serious quality control problem. And they have NO qualms about sending out bodge or dodgy things to their customers.
I got one of the Aixun T420 stations and it is identical to SDGs station, so he didn't just get a cherry picked review sample. Some highlights from that unit include:
1. Very good quality toroidal transformer (JBC units are using EI core transformer)
2. PCB and internal build are on point, not a single bodge, not even left over flux you usually see in cheap Chinese parts. It really is very well made IMO.
3. T115, T210 and T245 from a single station, huge selling point, you absolutely need to spend a fortune to get this with JBC. The prices are nowhere near comparable.
As such I'm at a point where it feels like the Chinese clone is starting to even one-up JCB in terms of assembly quality.
I also very much share the concerns about the temperature overshoots but Aixun actually seems to make firmware improvements based on these reach outs.
Their latest T420D updates have added "temperature compensation" menus, so I assume they've listened to people asking to turn these off.
Every YouTube video I've watched with people who has a JBC station has said dealing with JBC has been an absolute nightmare.
So although your experience with Aixun is not great, it seems to be on par to what you would get with JBC (if not better), not great as it is.
I also suspect they can't fix this problem with the Aixun T3A, so they probably haven't responded because what can they say "Oops we f#cked up".
Anyway, my assessment on the lay of the land.
I don't think perfect exists at this point.
Would love to hear what you ended up going for?
Btw. any chance you could comment on that diode fix proposed in this thread, did you try it and did it do anything for you?