![]() 05/05/2017 at 09:03 • Filed to: tools | ![]() | ![]() |
I need to wire in some new electronic toys on our boat. So I am in the market for a soldering iron, I have no idea what to be looking for. So what does oppo recommend? I’m not looking to spend a lot, but I don’t want to get some cheap crap that barely works.
Have on of the few appropriate times to roll coal for your time.
![]() 05/05/2017 at 09:08 |
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Weller is the way to go. Always.
![]() 05/05/2017 at 09:14 |
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Don’t solder on a boat. Use crimp connections. Marine electrical guidelines actually say you cannot solder as your sole electrical connection except on certain size battery lugs.
![]() 05/05/2017 at 09:15 |
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Counterargument - crimp connections in moist air would be not so good. Even if he heat-shrinks afterward, the solder connection is superior.
![]() 05/05/2017 at 09:16 |
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What’s the reason for that?
![]() 05/05/2017 at 09:16 |
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Seconded. And soldering *gun*, not iron for wiring things in. $40 later, taken care of.
![]() 05/05/2017 at 09:18 |
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+1 for a weller iron. Use heat shrink and or good tape (3M super 33+) for anything on your boat.
![]() 05/05/2017 at 09:18 |
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I’m assuming he’s thinking fire hazard, sump fumes, etc. etc. Bring a fan, I believe you’d be fine, as you’d not tend to have much of anything over auto-ignite temperature and certainly no sparks - except maybe in the switch of a soldering gun.
![]() 05/05/2017 at 09:19 |
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USCG and NMEA say crimp and shrink is best.
![]() 05/05/2017 at 09:21 |
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Hmmm...good to know. Guess I’ll go get some connectors and a crimper instead. (might still get a soldering just because lol)
![]() 05/05/2017 at 09:23 |
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I re-wired my entire boat last season, a ‘69 Chris Craft. Used only high quality crimp and heat shrink.
![]() 05/05/2017 at 09:23 |
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Don’t skimp and buy a cheap crimper either, I highly recommend a ratcheting one as it makes it easier to provide consistent crimps with less practice.
![]() 05/05/2017 at 09:25 |
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In my experience, the salt water dries and cracks the solder a lot faster than the surrounding copper wire.
![]() 05/05/2017 at 09:26 |
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No... In my experience crimping is just better; when done properly. In both auto and marine.
![]() 05/05/2017 at 09:39 |
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This is a good bang for the buck iron with cheap and durable tips and a good heat supply:
I have a bunch of soldering certs, and most of the irons I use tend to be prohibitively expensive for home use. So that is the one I have at home. I don’t need a $600 iron that takes $20 tips.
![]() 05/05/2017 at 09:47 |
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I’m OK with either. Most of my soldering has been with a gun, but recently I’ve been using an iron... apart from the fact that it’s a cheap piece of crap it’s fairly nice to use.
![]() 05/05/2017 at 09:49 |
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$25 bucks cant go wrong. Its a weller I use it a lot and it has held up very well_er. https://www.amazon.com/Weller-8200PKS-120-volt-Universal-Soldering/dp/B002YDMZF4
![]() 05/05/2017 at 09:53 |
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+1 for crimp and heat shrink. I worked at a marina for 8 years, this is what we did for electrical connections in nearly every application. On a related note, I miss having access to that parts room....
What kind of boat?
![]() 05/05/2017 at 09:56 |
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You can also get gel filled connectors to minimize corrosion. Do not solder.
![]() 05/05/2017 at 10:04 |
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1996 Four Winns Sundowner 245
We just bought it a month ago. We plan on taking it out on the big lakes (Michigan, Superior) so I bought a marine radio and a chartplotter that need to be installed
![]() 05/05/2017 at 10:05 |
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Interesting. I guess I’ve just been traumatized by too many bad crimps and stress damage to wires.
![]() 05/05/2017 at 10:07 |
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I wonder if different solders react differently. I could definitely see a high zinc solder pitting out, but I would’ve expected the dissimilar metals present in a crimp to be just as much at issue or more. I imagine a good silver solder would be superior to crimp corrosion-wise, but since it’s hard to make people use it...
![]() 05/05/2017 at 10:07 |
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Bad crimps are bad; stress reliefs on wires, good.
I do a lot of low voltage at work, I’ve seen some shit.
![]() 05/05/2017 at 10:14 |
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I’m guessing the biggest reason outside of metallurgy control for crimps to be code is reproducibility. It’s probably easier to ensure that acceptable crimps come through than good solder - since the range of possible “LOOK I SOLDURD ET” joints can be a lot wider.
As long as he’s sealing whatever the end product is and actually knows how to solder, I don’t imagine it would matter too much either way. Between a partly naked crimp and a partly naked solder, solder may or may not resist corrosion better, but it at least is harder to get away with not sealing - which is probably what drives the sense that solder is better.
In either case, a bad seal (like on some trailers I’ve seen) leads to misery.
![]() 05/05/2017 at 10:16 |
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I agree with that.
![]() 05/05/2017 at 10:27 |
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Given the marine application, you may also consider these:
https://www.amazon.com/Shrink-Solder-Sleeve-Crimpless-Connectors/dp/B01M1032A7
You put the wires in both sides, and heat it up. The sleeve shrinks, adhesive sets and secures, and the solder bead melts all in one step. A light tinning is recommended.
![]() 05/05/2017 at 10:34 |
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For just doing basic wiring in vehicles I love these little butane soldering irons. I definitely wouldn’t use them on any sensitive electronic components but for basic wiring they are perfect.
https://www.amazon.com/Iso-Tip-7971-SolderPro-Butane-Soldering/dp/B001RIDT84
![]() 05/05/2017 at 10:52 |
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I recommend a Hakko Soldering Station, if you need to solder.
![]() 05/05/2017 at 11:14 |
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Physics of crimping. They say “The result is cold-welded, gas-tight junctions between the strands and the crimp connector.”
http://hackaday.com/2017/02/09/good-in-a-pinch-the-physics-of-crimped-connections/
![]() 05/05/2017 at 11:17 |
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See my response link to oovoo. “The result is cold-welded, gas-tight junctions between the strands and the crimp connector.”
And yeah, they assume proper tools and technique is used.
![]() 05/05/2017 at 12:16 |
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I’ve heard that crimps are superior to solder joints, but it seems counter-intuitive. How can a crimp connection be better than a solid one? Does the act of heating up the wire make it a weak point?
![]() 05/05/2017 at 13:30 |
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I believe it has to do with the conductivity of the solder. Not sure though. I only use solder on audio stuff and circuit boards (obv).