Has anyone tried just making a small loop and then soldering copper line? I have been using an albright knot but have been thinking of trying the solder method.
Soldering copper line
Charter Capt Arnie Arrendondo showed how he does it. Place about 1.5" 3/16" shrink tube on the copper. Using a very small nail bend back the copper using about 1.5" tag. Twist the wire around the nail about 6 times. Move shrink tube over the end leaving the loop created by the nail exposed.
Final product looks much like the picture of the soldered version but easier to do and copper remains soft and no problems going thru the guides.
I've tried this and found that the solder was "stiff" and didn't go through the guide in the reel very well and it caused problems on the reel.
I went back to using a small spro swivel and a haywire twist with heat shrink tube. The swivel cures a pile of other "issues" ta boot!
I thought about soldering copper line too but never tried it. Frankly a stress test should answer your question.
The solder joint image posted looks good and the solder penetrated into the copper strands.
Did you haywire twist the copper line before soldering? I'd recommend that before soldering.