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favorite solder gun/type for automotive wiring

6.3K views 32 replies 28 participants last post by  Aceshigh  
#1 ·
wiring up the street rod. I have a pencil style that works like crap. looking for an upgrade. suggestions?
 
#3 ·
I use 1 made by berntzomatic
 
#4 ·
One of these!

http://www.acehardware.com/product/.../product/index.jsp?productId=1340440&cp=2568443.2568450.2628094.2629278.2629347

A mechanic changed my life by teaching me the real way to solder connections. Fray out the two connections, put heat shrink over one side, bring the two fan frays of copper together and separately wind them over each other. Then, cut a piece of solder about 1 - 1.5" and fold it over itself into kind of a U. Wind this U around the joint really tight. Then, take a gun like this, heat it up until it is red and then feed a bit of solder on to it until you have a very small puddle. While still holding the gun, while it is red hot, apply the gun to the bottom of the joint. The wound up solder displaces right into the connection and makes a perfect joint every time. This method made wiring my car a blast, easy and accurate as hell. Those pen soldering irons are for PCB's! I will see if I can find a video of the technique.
 
#5 · (Edited)
Nope, I've had the high output wellers they don't have enough ass for 10 gage wires or soldering three or four wires together. Buy this 400 watt one below, I have one and they work great. Heat up super quick, study tip design and priced right. When soldering automotive wiring you want to get the wiring hot as fast as possible for a quick solder joint. If you have a low power iron the heat will just wick back three or four inches in the wire putting a hurting on the insulation and never getting hot enough.

Here ya go:
http://www.sears.com/craftsman-professional-dual-heat-soldering-gun/p-00927320000P
 
#6 ·
Here is what I do:

Step 1: Fray the wires



Step 2: Wind them together






Step 3: Cut a piece of solder and form it into a "U"




Step 4: Wind the U around the joint



Step 5: Solder it (I didn't have it tight enough so some fell off but I did this quick) Video



heat shrink it... next!!! Again, I did this video and pictures quick but it is a great method. This only works with a flat tipped gun and not a pen.
 
#25 ·
As someone who uses these things daily for the past 15ys (auto electronics and vehicle wiring) and has tried just about every reasonably priced gun and pencil put there, a big +1 on that Hakko model. it gets plenty hot quickly, fully adjustable as well as can be put in a secure mode that locks on one temp.
My main "in car" butane is one of these...
http://www.amazon.com/PSI100K-Super-Pro-Self-Igniting-Cordless-Soldering/dp/B000ICGN38/ref=sr_1_1?ie=UTF8&qid=1461856865&sr=8-1&keywords=PSI100K
Plenty of heat, tips last and not nearly as tempermental as the Power Probe one.
 
#15 ·
I use several, and that has changed over the years, and changes even now depending

For out in the sticks, or "up that tower" (RF feedlines) you really cannot beat the "big" Weller Butane. But they are WAY too "much" for small wire

http://www.weller-toolsus.com/soldering/irons/butane/weller-wpa2-weller-pyropen-kit.html

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The big weller butane is big. It's huge. In fact, it's quite large. They can be had with several sizes of tips, I think the largest is on the order of 5/6 wide chisel. We used them to solder HUGE RF heliax center connectors

Next, go to garage, thrift, "used" stores and find yourself a real by-Gawud soldering IRON. Something from the 50's. The trick here is they are usually only 80-100 watts, which is not much in a "gun" but the "big tip" is the "deal"

I've actually got several of these, and paid less than 5.00 apiece for them

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Doesn't need to be "this big" but believe it or not I HAVE one "that big"

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Someone above claims the big Weller gun is "not enough". I have no idea what you are doing, there, but you can EASILY solder a pair of 10ga wires with the "big" Weller gun. You MUST wiggle /loosen/ tighten the tip nuts the first time you "get it out" to make sure they are tight. This is an ongoing problem with ALL Weller guns, but once you learn that simple work around, you are good

The D550 seems to have changed over the years, I swear some of the older ones were higher wattage but they do show a D650

Amazon shows them for under 60 bucks

http://www.amazon.com/Weller-D650PK-Industrial-Soldering-Gun/dp/B000TDGI18

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But for smaller stuff, no 18--16 wires, a bench "pencil" iron around 60W is fine. THE SECRET HERE is get a large enough tip. GET A LARGE ENOUGH TIP!!! GET A............. get it? And with stuff like the Wellers make CERTAIN you get the RIGHT "correct" tip for the iron!!! Some of those are "trick" magnetic controlled tips, and you have to have the right tip for the iron.

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#20 ·
I had an RC dude show me how to solder without ruining the rubber casing on the wire.
I rub flux into the wire.
I melt a blob of solder onto the tip of my 80 watt iron.
Touch the molten blob to the fluxed wire, and the wire sucks it in instantly without overheating the plastic housings.
Simple, quick, and clean joints.
 
#33 · (Edited)