Wash all three cucumbers and skin each cucumber with a peeler. Do not peel-off all of the skin, rather make uneven peels
Chop cucumbers into half inch circles
Pour salt onto the cucumbers and give them a good mix with your hands to coat thoroughly. Set the cucumbers aside for 30 minutes and they will slowly release water. Rinse them off and get rid of excess water
For the marinade: Thoroughly mix vinegar, Korean red chili powder, sugar, soy sauce, sesame oil and minced garlic in a bowl
Dress the cucumbers with the marinade. Get in there with you hands and coat all of it!