Here you can see the clear melted adhesive lining squeezing out the ends of the insulation. With this type of crimp connection the transparency tells the story.


Where the heat shrink covers the wires jacket, and the barrel, your looking for uniformity in color and transparency. Any spots or areas that are a different color will be spots where the adhesive lining did not properly melt.


One other thing to take notice of is that the single ratchet crimp tool did not rip the heat shrink tubing.