New white paper on the GT90 and GT120.
Would be nice if they tested against the older stations, but, its against some "unnamed" competitors.
The test setup they used isn't terribly complicated. They use large chunks of copper, and wait until the temperature reaches a setpoint:
![](https://www.eevblog.com/forum/reviews/metcal-gt120-soldering-system-with-heater-cartridge/?action=dlattach;attach=1413721;image)
They say "tip or cartridge" but they obviously are using their own cartridge design to get the best performance.
![](https://www.eevblog.com/forum/reviews/metcal-gt120-soldering-system-with-heater-cartridge/?action=dlattach;attach=1413725;image)
![](https://www.eevblog.com/forum/reviews/metcal-gt120-soldering-system-with-heater-cartridge/?action=dlattach;attach=1413729;image)
The unnamed competitors, my guess in brackets:
- A) 90W tip style
(Weller WTP90) Weller WT1010
- B) 75W cartridge style (Hakko FX951)
- C) 150W tip style
(Ersa i-con 1) Weller WT1010H
- D) 140W cartridge style (Hakko FM-2030)
If the 140W is the JBC, then it may not be capable of 140W, in one of SDG's videos he said it limited the output to 90W. You probably have to use T470 to get the full 140W. Sadly JBC does not make this clear in their documentation, that I can find, they just say "140W peak" for the base unit.
edit: the 140W could be a Hakko too, didn't realize they had a 140W handle.