The JBC tip was a C245-407.At what temperature?
I mentioned this in an earlier post. According to the GT90/120 manual: "Always use cartridge removal pad and turn off system when changing cartridges."
So the part in the video at 23:30 is a bit misleading, cartridge detection does not imply hotswap capability.
Power switch looks accessible but why not just put it on the front/top/side. It looks like they went with a plastic handpiece which is a bit of a backwards step in my opinion over the MX5200 with MX-H1-AV.
You need to eliminate human error when testing I think. On the Metcal MX5200 your feed rate was slower so the mean external tip temp was higher. This all alters the results, it's been proven subconsciously we will skew testing by being involved especially when most people (even I) would be biased towards the MX5200 going into the test (as it's a known top performer).
You need to eliminate human error when testing I think. On the Metcal MX5200 your feed rate was slower so the mean external tip temp was higher. This all alters the results, it's been proven subconsciously we will skew testing by being involved especially when most people (even I) would be biased towards the MX5200 going into the test (as it's a known top performer).
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Feeding in faster could cause the tip temp to reduce more and control loop would pump more power in, giving an advantage.
In terms of overshoot, you can see from JBC's own 2009 measurements they can have significant ~20C overshoot. Ersa and weller are much worse (at least the models tested here). Metcal has no overshoot.
If you are doing mil-spec level soldering, sure you would care a lot.
If you are hobbyist, soldering big copper areas, most won't care about 20C of overshoot if it means the iron performs better.
Since the GT120 seems slower than the MX5200 to heat up there evidence already it's power to mass is lower.
You need to eliminate human error when testing I think. On the Metcal MX5200 your feed rate was slower so the mean external tip temp was higher.
New white paper on the GT90 and GT120.
Would be nice if they tested against the older stations, but, its against some "unnamed" competitors.
I saw this too. I'm contemplating rigging up a similar setup.