3d printing is something that may people have heard of, and it seems easy enough to do. Just put the plastic string in the tube and tell it what to do. However, in order to use a 3d printer properly, you need to know how to do it.
First, you need to boot up a 3d modeling program. You can use any program you want, but I'm personally going to be using the free, easy to use, online 3d modeling program known as Tinkercad. Also, before we continue, make sure the 3d modeling program you're using is able to save files in the correct format for your 3d printer. If it isn't, I highly suggest that you open up the manual for your 3d printer and see if there's a certain 3d modeling program that works best for your printer. If not, try to ask others with the same model and/or brand of 3d printer as yours for what 3d modeling program they prefer to use. Now that you have your 3d modeling program, all that you need to do is create a 3d model, which is simple enough to do, if you know what you're doing. But if you don't know what you're doing, then it's still pretty easy to do. If you still can't get a 3d modeling program, then just go on to a website such as thingiverse to find and use a random person's 3d model instead.
After you get your 3d model, you need to load it into a slicing program like cura and convert it to the proper file for your 3d printer.
Then all you need to do is to load the file into your 3d printer. This is done in differently based on what type of 3d printer you're using. Then you just 3d print the 3d model, which is very easy to do. However, you may need to consolt our 3d Printer guide for help. See you later! The end.