Sound difficult? Actually it’s incredibly simple to make, if of course, you have access to a 3D printer. Household Hacker asked the guys at Robo3D, the 2-year-old 3D printer manufacturer, to design a tap. They did, and it came out very nicely. After printing the tap, of which the 3D model can be downloaded here, next you need to hollow out the inside of a watermelon. Be sure to leave just enough fruit around the edges in order to give any liquid poured inside, a nice flavor. The next step is to cut a small whole near the base of the fruit, about half the diameter of that of the printed tap. Now you can force the tap through the whole, ensuring a tight fit. At this point you are ready to fill the watermelon with ice, add your favorite drink, and replace the lid. You will now be ready to serve all your friends, from your partially 3D printed watermelon keg. More than likely they will be thoroughly impressed by your creative idea.
In total, the watermelon dispenser is made up of five different parts. As long as your 3D printer has an adequate build envelope, all five parts can be printed out at once, and on average should not take much longer then an hour to an hour and a half to print out.
Check out the video below from Household Hacker, explaining the entire process in detail.