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DIY Resistance wire
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Refrigerator:

--- Quote from: Zero999 on January 14, 2022, 01:12:00 pm ---Does it copper plate easily? If so, perhaps that'll make soldering easier.

50A through 50mΩ is 125W. How did you stop it vaporizing?

--- End quote ---
When etching boards in copper chloride i noticed that if i dipped my stainless steel tweezers in the etchant they would self-plate with copper.
The copper layer was very well stuck and pretty durable, enough to solder on to.
coppercone2:
Wow that oil trick is interesting.

I would imagine a very fine stainless brush could make it easier to solder to also, like 0000 stainless wool.

But also keep in mind getting copper foil that is the thickness of aluminum foil is not too expensive.

I try to stay away from aluminum.

Did you try a side by side comparison with oil and flux? I wonder if oil can be better then flux in this case. I also want to say some deep fryer oil I think has small amounts of citric acid in it and stuff, that might make it work even better.

vinegarette soldering? try some dressing lol, maybe the oils from herbs help too... (seriously). I love the copper chloride plating idea too..
RoGeorge:
I've first read long time ago about soldering under oil on weird materials that otherwise doesn't solder, then seen the video with oil and Aluminium, and tried for myself out of curiosity.  It worked just fine, even with sunflower cooking oil.

Since then I've used the "solder under oil trick in order to avoid creating a layer of un-solderable oxide layer" trick, and it worked.  I've never tried to flood the soldering area with flux instead of oil.  All I can tell so far is:  trying to solder on Al without flooding the area with oil won't really work.

Later edit:
------------
If you try the oil trick with a soldering iron (not a soldering gun with expendable solid copper tips), and you cherish the life of your soldering tip, you better cover it in some Al foil before, so the oil doesn't actually touch the soldering tip of a classical soldering iron.

If you let the oil to directly touch a soldering tip that is not sacrificial, then be ready to lose that soldering tip, because most probably the oil will damage your tip, just like Labrat101 predicted.  I've touched oil with a normal soldering tip of a soldering iron (not soldering gun), and had a ver hard time cleaning the oil out of the soldering tip.  So don't do that.  Use a sacrificial tip instead, or wrap the soldering tip in kitchen Al foil wrap.
Labrat101:

--- Quote from: coppercone2 on January 15, 2022, 05:17:08 pm ---Wow that oil trick is interesting.

Did you try a side by side comparison with oil and flux? I wonder if oil can be better then flux in this case. I also want to say some deep fryer oil I think has small amounts of citric acid in it and stuff, that might make it work even better.

vinegarette soldering? try some dressing lol, maybe the oils from herbs help too... (seriously). I love the copper chloride plating idea too..

--- End quote ---
I did try that oil trick just out of curiosity .
I did several tests . sunflower oil, vaseline , Amtech flux the fake stuff , Organic paste Mil Grade, & machine oil ,
 Also tried 40/60 , 63/37   
 Sunflower oil . I was not impressed it works  , 40/60    Has low smoke point  starts smoking @ 314c  @ 360c need to open windows  >:(
 Vaseline  worked well first attempt  with 40/60  ok   63/37 better  low temp 340c 
Amtech flux the fake stuff  .. Horrible failed
Organic paste Mil Grade  .... Failed
 machine oil , failed smelly & smokey .
The sunflower oil is a tip killer .
Vaseline was about the best and did not stink .

The oxide from the foil made cleaning the soldering iron tip hard . 

 This not something I will do again .
EDIT
ALSo  vegetable oils contain acids  and aluminium foil is rolled and anodized* so there can be fumes that are not Human friendly .
*Anodized as not normal anodizing its surface is treated for food quality
coppercone2:
hmm thats interesting that it outperformed the flux. That is a neat trick.
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