Duotone: Bringing Life to Your 3D Prints With Two (Or More) Colors – MUO – MakeUseOf

Most 3D printers limit you to a single color. Luckily, you still have multiple ways to get duotone prints with your current 3D printer.
3D printing is increasingly popular, but it remains far from perfect. Printing takes a long time, it can be hard to get your settings just right, and many people get frustrated with painting models to enjoy more than one color.
Most consumer 3D printers are only able to print in a single color. It is possible to create multi-color prints at home, but how exactly can you achieve this goal? Here, we'll explore some of the best ways to bring your 3D prints to life with multiple colors.
Several methods enable you to create multi-colored 3D prints, and you need to choose the one that works best for your setup and situation. You may have to purchase additional hardware to make this work, though this can be cheaper than buying a 3D printer that can do it out of the box.
The first option we’re going to look at is by far the most affordable, but it may also seem a little bizarre. Most people wouldn’t consider the idea of printing their own 3D printable filament. However, this can be one of the easiest ways to start printing multi-colored designs, as you only need to use software to make it work.
It’s worth keeping in mind that this type of 3D printer filament gives you little control over the colors used at each stage during the printing process. You can estimate when colors will need to change, though it can be challenging to get this right without spending a long time on trial and error.
Many people decide that they want to dip their toes into multi-colored 3D printing after they’ve already bought a printer they like. Rather than replacing your new printer, you can choose to get an upgrade pack or a separate system for controlling the filament used by your printer.
The 3D Chameleon Color Changer is a great example of tools like this, offering the chance to make just about any printer into a multi-color one. Alongside this, companies like PrusaPrint also provide their own 3D printer upgrades that support dual-color 3D printing, but these will only work with specific printers.
There are a lot of dual-nozzle 3D printers available on the modern market, though many of them are best suited for industrial environments. Printers like this have two extruders that move together as a print is made. This enables two colors to be printed onto the same model without worrying about making special filament for it.
There are plenty of examples of printers like this available today. The Geeetech A10M is an affordable example, though you can find options in just about any price range. It’s important to make sure that you always do plenty of research when considering the purchase of a new 3D printer.
IDEX stands for Independent Dual Extruders and refers to printers with two extruders that can move independently. In most cases, the extruders will share two axes while moving along the third freely. This enables printers like this to print two models simultaneously, either mirroring or duplicating the same shapes. Of course, it also allows dual-color printing.
This type of printer is rarer than simple dual-extruder options. The printer we are using for this article is a FlashForge Creator 3, an IDEX machine that has become very popular amongst small businesses. There are other companies making printers like this, giving you loads to choose from.
Related: What Is 3D Printing And How Exactly Does It Work?
Since we have access to an IDEX printer, we will be using this machine for this article. Despite this, many of the steps you have to follow will be the same for other types of dual-color 3D printers. Hence, it should be nice and easy to get started yourself.
The example we are using for this guide is a 3D printable dual-color die from Thingiverse. This project is free to download and comes with everything you need.
As your first step, you need to prepare your files. You heard that right; you need more than one file to use a dual-color printer. Each of the colors you use requires its own STL file, and this means that we are using two for our die. We are using FlashPrint for this, but the steps will be very similar in your own slicer. Here's what you need to do:
Finally, you can now click Ok, wait for your software to finish slicing, and export the file to your 3D printer.
You need to do some work before you can start printing your new model. IDEX 3D printers are usually very precise, but you’ll need to calibrate them to get the best results. Generally, you can use the software that comes on the printer itself to do this.
In the case of the FlashForge Creator 3, we have to turn the printer on and go to the Tools menu. From here, you can select Settings, followed by scrolling down the list to find the Calibration tool.
It makes sense to go through the process with each axis on your printer. When you select the axis you would like to calibrate, your printer will draw a line with each extruder. These lines should match up perfectly, but you can adjust the offset and draw new lines until they do.
This can be time-consuming and a little bit frustrating, but it will be worth taking the time to make sure that your printer is perfectly calibrated before starting your dual-color print. Failing to do this can result in ugly prints like the one above.
Related: Useful 3D Printing Ideas and Projects for Your Home
Thanks to the wall that went around your print, it’s likely that you will need to do some clean-up before it looks perfect. There will be strings of filament stuck to the model, though you can usually remove them with your hands. You may also notice rough spots on your print, and these may have to be sanded a little to make them perfect.
Being limited to a single color has long been one of the few downsides of 3D printing. This doesn’t have to be the case when you are willing to be creative and explore the available options.
We hope this helps you improve your 3D printing projects and gives you new ideas to start working on. Multicolor 3D printing has never been easier, and it’s well worth the results.
Want to buy a 3D printer but don’t quite understand the basics? Follow our beginners guide to learn how to 3D print today.
Samuel is a UK-based technology writer with a passion for all things DIY. Having started businesses in the fields of web development and 3D printing, along with working as a writer for many years, Samuel offers a unique insight into the world of technology. Focusing mainly on DIY tech projects, he loves nothing more than sharing fun and exciting ideas that you can try at home. Outside of work, Samuel can usually be found cycling, playing PC video games, or desperately attempting to communicate with his pet crab.
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