For your own reference the first removal with the Hakko took 2mins and the second with the JBC about 3.5mins.
The JBC took longer on the first go since I accidentally hit the button that turns it off on the handpiece. It's in a really inconvenient place right on the handpiece, very easy to hit by accident and not notice! That doesn't speak to the technical heating proficiency of the unit, but it does speak to its practical usability. I know other people will accidentally hit this button, so it is worth leaving in. If you check out removal of the ISL6259 and the LP8550 chip, they really are neck and neck. With the all in one units I tried from Weller and Hakko that had a "pencil" hot air, there was no amount of time I could give it to remove an ISL6259.. that was not coming off.
What is your justification on all other models being junk? Do they not have enough airflow or too much airflow such as the pump or incorrect nozzle, not enough heating? Do you ever preheat the board or just crank the hotair to max and then go for it?
For me the 6L/m airflow limit on FM-206/FM-2029 is painful. The problem is that for virtually the same price I can buy a dual port station + a proper hot air station that is much more powerful. I preheat for BGA rework with a ZM-R6200c machine. I'd never attempt large scale BGA rework without preheating; but for something like an LED driver or a small connector I don't find much benefit to preheating.
If the all in one were considerably cheaper, I could consider it. However, all too often, the all in one station costs as much as discrete components and the discrete ones in this case are much more versatile - at least that was my experience with the WR3000M and FM-206
I felt after watching the first part of your video that you were just trying to remove a component with a large ground as fast as possible and that was the whole review.
I did desolder and solder a QFN with a heatsink/ground pad that has high thermal mass, as well as do a microbga with both stations. I completely understand if this is too long for anyone to want to watch, but I feel unfair to say the entire review was desoldering one component with a large ground plane. The ISL6259 and LP8550 are two components that a lot of newbies to soldering/rework in general have great difficulty soldering on properly, particularly the ISL6259 due to the thermal mass in this area of the board. I feel it is worthwhile to include how both stations handle this.
I've seen a $50 hot air station used to perform large BGA rework, so would you agree that there is amount of experience involved or do you think there is some specification or design aspect (aside from reliability) that makes these superior to other models?
It's skill. I know people who can use a Scotle IR6000 to do large BGA rework. I tip my hat to them, it's not something I can do. I have too many issues with cheap hot air. I know exactly how long it will take me every time to get an SMC, an LVDS MUX, an LED driver, and so on and so forth on the board. It works predictably. For me hot air by hand is more about feel than precise profiles and times and I find it hard to get a feel for a station that works differently everytime I turn it on. I recently tried to use a BAKU hot air station to remove a connector and I just gave up. I also had much trouble getting the Atten 858D to do anything on multilayer PCBs, even with preheat.
Since you're in business have you thought about getting certification/IPC training with a company like BEST?
I haven't had any IPC certification or training. If my job were professional solderer, I would go for it - but no one in their right mind would hire me solely for soldering. My job's meat and potatoes is complex analysis/diagnosis and finding the flaws. What brings me business is being able to solve complex problems on complex PCBs that someone else cannot. For me, the best investment of my time is in bettering my ability to quickly & efficiently solve those problems, not take an IPC certification.
Most of what I do would make certified solderers cringe. Combining leaded & lead free so that my six jumpers don't move when soldering a chip on top of it. There are a lot of oddball things I do to revive things that have been pee'd on or dunked in coca cola. My health limits how accurate anything I do with my hands is going to be so if I were looking to advance in any direction it most likely wouldn't be towards becoming a more proficient solderer.