### Author Topic: SDG Electronics mega soldering system thread - New: JBC Nitrogen Soldering  (Read 13209 times)

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#### thm_w

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##### Re: SDG Electronics mega soldering system thread - New: Metcal Connection Validation
« Reply #50 on: September 29, 2021, 07:05:50 pm »
Saw this article with a coin test and thermal calculations at the bottom: https://diyodemag.com/reviews/new_and_reviewed_hands-on_review_thermaltronics_tmt-9000s-2_soldering_station

Quote
For our coins, we know the mass is 5.2g and that the specific heat capacity of copper is 0.385J/g°C. We also know that the temperature our 60/40 leaded solder flows at is around 250°C.
Therefore, the thermal absorption is: Q = 5.2 x 0.385 x (250°C - 25°C) = 450J

We know the iron is capable of delivering 40W of heating power and the total energy required to heat the coin, thus, the equation to calculate Time becomes:
T = E / P = 450J / 40W = 11.25 seconds

2p coin is 7.12g = 620J = 15s for 40W, 8s for 80W, leaded solder, using their numbers.
Lead free should be a couple seconds longer.

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#### SteveyG

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##### Re: SDG Electronics mega soldering system thread - New: Metcal Connection Validation
« Reply #51 on: September 30, 2021, 05:24:17 pm »
MX-500P-11 arrived, well used but perfectly functional. Thermaltronics tips works perfectly with the mx-500 without the issues I see with the mx-5200. If it wasn't for the 80w of the mx-5200, I'd happily use the mx-500 as my main unit, not a fan of the longer boot and reset time of the mx-5200.

Also I don't see a big difference in thermal performance between the two unless I'm soldering to something like a aluminum PCB.

I have the newer MX-500 with the LCD that looks like the MX-5200 and for general soldering you can get by perfectly with the 40W RF power. However, I do notice if you use them both side by side, there is a slight delay before the full wetting stage of the solder joint with the MX-500. I now keep the Ultrafine handpiece on the MX-500 and the Advanced handpiece on the MX-5200. The other port is usually connected to the desolder gun but gets swapped for the tweezers sometimes since they do take a lot longer to heat up on the lower power station.

Recently I've gone back to using the GT120 after all these other stations and I'm actually really impressed with it. I initially didn't think much of it since I'd been using the MX-5200 almost exclusively, but after all these other systems I've realised just how good it is, probably better than every other system except the MX-5200. The downside to the GT120 is the lack of cartridge types and general availability of them.
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#### labjr

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##### Re: SDG Electronics mega soldering system thread - New: Metcal Connection Validation
« Reply #52 on: October 09, 2021, 04:39:28 pm »
I guess you're paying for performance with anything Metcal. I don't know if I'd spend that much for a soldering station that uses a power brick. And I don't care for the factory kludge.

#### SteveyG

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##### Re: SDG Electronics mega soldering system thread - New: Metcal Connection Validation
« Reply #53 on: October 13, 2021, 07:45:13 pm »
I guess you're paying for performance with anything Metcal. I don't know if I'd spend that much for a soldering station that uses a power brick. And I don't care for the factory kludge.

Factory kludge has gone. I need to do an update as all of those versions were supposed to be recalled from distributors.
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#### TopQuark

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##### Re: SDG Electronics mega soldering system thread - New: Metcal Connection Validation
« Reply #54 on: November 18, 2021, 07:32:36 am »
So I have been using my Metcal for a while, and since I don't have the time to do a proper comparison video between the Metcal and other stations I own, I thought I'd leave my thoughts here.

Just get the Metcal, it is well worth it. It just works (provided you use Metcal tips not the thermaltronics ones), it solders anything I throw at it, and it brings a smile to my face everytime I use it. The Metcal tip plating is just as good as the Hakko, which I consider to be the gold standard when it comes to plating durability, but obviously the thermal performance is miles ahead. Compared to the Goot, it has better thermal performance, especially when comparing the ultrafine tips. I can solder wick a 4-layer QFN center GND pad with the Metcal ultrafine tips, but the Goot ultrafine tips can't reflow 0402 pads if the pads has the slightest bit of copper pour on it. My DIY Weller RT station comes close to the Metcal when it comes to thermal performance, but the Weller tip plating is very fragile and blackens fast.

On the subject of tips, I have 10 Metcal tips for my standard handpiece, and I use the STTC-126 90% of the time. The tip to grip distance is second to none, I can comfortably work under the microscope with it. I can do anything from reworking 0402 to soldering SMA connectors to ground planes with that tip, I almost regret buying the other tips. The SMTC-1183 is amazing for drag soldering fine pitch QFP, it makes the job so unbelievably easy. I also like the STTC-117 for soldering solid brass vacuum fittings together, it is the tip I use when sh*t hits the fan.

Overall I can't praise the Metcal enough, and just wish I had gotten it years sooner, without going through the expense of buying the other stations I own.

#### mikeselectricstuff

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##### Re: SDG Electronics mega soldering system thread - New: Metcal Connection Validation
« Reply #55 on: November 18, 2021, 02:09:11 pm »
It just works (provided you use Metcal tips not the thermaltronics ones),
Why? I actually find thermaltronics tips better, in terms of lifetime and shape detail
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#### TopQuark

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##### Re: SDG Electronics mega soldering system thread - New: Metcal Connection Validation
« Reply #56 on: November 19, 2021, 03:55:56 am »
I am noticing some funky behavior with my particular setup. The tip I am using for the copper clad board test is a M7CH250 from thermaltronics. The tip does heat up to ~378C and draws ~70 w peak (front panel power meter) doing so. However, after the initial heating phase, the tip only draws ~20w from the station no matter how high the thermal load is and the tip gets stuck. I observed similar behavior with the M7CH024 tip as well.

The station switched to simultaneous dual output seems not to suffer from the same issue, but is a bit of a pain as power cycling is required for tip change in this mode. In any case, I have some Metcal tips from Mouser coming today which will hopefully solve this issue.

This, for whatever reason all my Thermaltronics tips don't play well with my MX-5200, the tips just wouldn't stay hot after the initial heating phase. The Thermaltronics tips do work well with a second hand MX-500 I bought though.

#### SteveyG

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##### Re: SDG Electronics mega soldering system thread - New: JBC Tweezers
« Reply #57 on: November 29, 2021, 11:22:40 pm »
Added a video on my thoughts about the JBC AM120 and Metcal MX-PTZ Desoldering Tweezers
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#### thm_w

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##### Re: SDG Electronics mega soldering system thread - New: JBC Tweezers
« Reply #58 on: December 03, 2021, 05:19:26 am »
Added a video on my thoughts about the JBC AM120 and Metcal MX-PTZ Desoldering Tweezers

Looks like the AM120 are built basically identically to the Hakko tweezers, with the same offset adjustment mechanism. As you said making the adjustment redundant. Almost as if the same company designed them, quite odd. However the stand looks a lot nicer: https://www.hakko.com/english/products/hakko_fx1003.html
Had to modify them with a shim to make them usable for me: https://www.eevblog.com/forum/reviews/hakko-rf-soldering-tweezers-fx-1003-\$240/

The eccentric design on the Metcal just seems smarter, properly rigid. But metcal haven't released a small size tweezer, I'm sure they could come up with a decent one.

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#### SteveyG

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##### Re: SDG Electronics mega soldering system thread - New: i2C 1SCN Dual JBC
« Reply #59 on: January 18, 2022, 06:24:55 pm »
Added the first extremely sketchy solder station so far.
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#### SteveyG

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##### Re: SDG Electronics mega soldering system thread - New: JBC Nitrogen Soldering
« Reply #60 on: April 11, 2022, 08:09:12 pm »
Added JBC's KNE-A Nitrogen soldering iron: