The key element here is that copper and solder mask placements have extremely fine pitch. After placing the LEDs and resistors there’s a lot of blank space which was filled with what you might ...

It's called Cabeau tape. These small strips of tape can be used to stick the upper edge of your mask to your face, thus stopping your breath from escaping and fogging your glasses up. Sounds ...

The latter group is dominated by adhesives – sticky stuff like cyanoacrylate glue, Kapton tape ... so-called Z-tape just might be an adhesive that can stand in for solder under certain ...