Quick and easy way to chop watermelon, way cheaper than buying already cut, and much tastier. Put watermelon on cutting board and cut off one end. One end . How-to-Cut Watermelon Sticks - a 4-step process for cutting watermelon sticks - perfect for an elegant dinner party or backyard barbecue. watermelonpoint.com how to cube a watermelon First you will need a sturdy long knife (I like this Rachel Ray Knife set) one that will slice threw a watermelon in one easy motion.