Scissor hash or finger hash is the product of trimming wet cannabis plants. Cannabis plants are very sticky, especially when they still growing and wet. While handling and trimming plants, the resin stalks (trichomes) get rubbed onto growers hands/gloves and scissors. By rubbing the trichomes off the hands/gloves/scissors, you get essentially wet kief. The product is often discoloured (due to plant matter, dirt, etc) and gummy in texture
Hash, or hashish, is the product of collecting the resin stalks, trichomes, or THC, from cannabis plants. This classic form is commonly collected by growers when they handle the mature plants. The resinous trichomes of the plant rub off on their hands, thus creating the common terminology for it: rub.
In some areas it’s referred to as finger or scissor hash. When the plants are trimmed after curing, they also trickle down trichomes. Growers tend to trim over a silk screen, and the sieved product is what’s commonly referred to as kief. It’s also collected in grinders with screens inside, though without a filter through a proper silk screen, it’s not truly a hash.
Another common collection technique utilizes several silk screen bags(bubble bags) and ice water to separate the trichomes from the cannabis plant matter and filter them through the screens. This yields a solvent-less bubble hash, full melt, or ice wax.