Benefits of Electroplating 3D Prints and How it's Done
Electroplating is a finishing technique that involves applying a thin layer of metal to various items. You may be familiar with gold-plated jewelry; it's a cheaper alternative to real gold jewelry that looks almost identical. It is possible to electroplate any electrically conductive material, including metals, polymers, and even other metals.
This encompasses your plastic 3D prints, which allow you to enhance the look and durability of your item without incurring the astronomical costs associated with metal 3D printing. Find out how to utilize it for 3D printed components, how it works, the benefits and drawbacks of the method, and more in this comprehensive article.
Tools Used for Electroplating 3D Prints
1. Electric power supply: A reliable electric power supply is essential for electroplating, so be sure to use a laboratory-grade supply or, for a more economical option, an MK3S+ power supply unit (PSU) and a step-up converter.
2. Sandpaper: Use sandpaper with a granularity of 1000 to 2000, a polishing paste, and a cloth. To make sure the 3D print comes out looking great, use these tools to buff and smooth it before you add the conductive paint.
3. Rotating device: You can also use an improvised rotating device, such as the Rotajig, to keep the 3D print rotated while electroplating, which makes the plated layer more uniform.
4. Big container: For complete submersion of your 3D print during electroplating, you'll need a container—big enough to accommodate your project—that can hold the electrolytes, such as an aquarium or transparent plastic box.
5. Electrolytes: Different metals, such as copper and nickel, call for different electrolytes, so it's important to choose the right one for the metal plating you're doing.
6. Electrodes: Which electrodes, such as copper or nickel, are best for your electroplated 3D print depends on the electrolyte you're using and the quality you're going for.
7. Wires and clamps:Accurate and consistent current flow during electroplating requires the use of specific electrical components, such as wires and clamps.
8. Galvanic pen: The galvanic brush, often called a galvanic pen, is a tool for applying electroplating solutions precisely; it's ideal for tiny or intricate parts of a 3D print.
9. Safety gear: Equipping yourself with the necessary safety gear—a lab coat, goggles, gloves, and a half-mask—will keep you safe from chemical vapors and exposure during electroplating.
10. Material: The SL1S SPEED and other resin-based SLA printers are suitable for producing high-quality electroplated finishes due to their exceptionally smooth surfaces.
11. Airbrush: An airbrush, no matter how simple or cheap, will do the trick when it comes to electroplating your 3D print with conductive paint.
12. Conductive paint (copper, silver, graphite): If you're going to electroplate your 3D printers, the best option is to use copper conductive paint due to its high conductivity and user-friendliness.
Why Do We Need to Electroplate a 3D Print?
By applying a thin layer of metal electroplating to a 3D-printed plastic object, the printed object can take on the characteristics of the metal. You can add qualities like conductivity or magnetism to plastic prints, and they will look like metal. There are more justifications for electroplating, such as:
- Capacity to manufacture conductive components of superior quality
- Removes the requirement to print in metal while still giving components a metal finish
- Strengthens and prolongs the life of the component
- Strengthens the component's ability to withstand adverse conditions, such as chemical exposure and ultraviolet light.
- Protects naturally occurring components from deterioration
- Proficient in metal prototyping prior to investing in mass production
Electroplating 3D Prints: How to Do it for Perfect Results
Step 1. Getting Ready for Electroplating
Before you dive into the world of electroplating, be sure your setup is safe and clean. It is imperative to use the appropriate protective gear, such as gloves, goggles, and a respiratory mask, to avoid any possible harm. Another crucial thing to remember is to work in an area with good ventilation so you don't inhale any dangerous toxins. Electrolyte solutions pose a threat to both humans and the environment if not handled and disposed of with extreme caution.
Step 2. Creating the Perfect 3D Print Foundation
The adaptability and accessibility of SLA and FDM make them popular choices for electroplating 3D printing. Although SLA provides better detail resolution, FDM, with the right post-processing, can still deliver good results. You can use any substance that conductive paint sticks to, so long as you choose the correct one. Even industrial-grade materials, such as PEEK and nylon, are within the capabilities of specialty providers.
Step 3. Get a Perfect Finish with Sanding
For electroplating to work, the surface needs to be as smooth as possible. To achieve the perfect surface for plating, FDM prints often undergo several rounds of sanding and filler spraying. To fill in any imperfections and make sure the surface is even, try using polyurethane varnish.
Step 4. Cleaning the Part
Electroplating works best on a clean surface. Paint, filler, and metal coatings can't stick as well to surfaces that are dusty or greasy. Before starting the electroplating process, make sure the part is clean and degreased. Keep it clean between steps.
Step 5. Making Your Print Conductive
Putting on some conductive paint will turn the component into a conductive one. Graphite paint is a cheaper alternative to the more conventional copper or nickel paint. Check that the paint and filler are compatible before proceeding. On the other hand, others have tried using conductive filament, however the outcomes might be different.
Step 6. Immersing the Part
When you're ready to set up the electrical circuit, you'll need to connect the anode electrode to the metal you'll be plating and the cathode electrode to the component you'll be coating. For uniform plating, make sure to submerge the component entirely in the electrolyte solution.
Step 7. Electroplating Your Design
When you're ready, turn on the power source. Model thickness and tank volume are two of the many variables that determine the necessary current. When the coating gets thicker, it's best to gradually increase the power.
Step 8. Finishing Touch
Subsequent plating with metals such as palladium, nickel, or gold is an option following electroplating. Alternate processes, including brush plating or further electrolysis, can accomplish this. Improving the coating's reflectivity is another possible outcome of chemical cleaning.
The Benefits of Electroplating 3D Printed Parts
Electroplating plastic 3D-printed components is a bit of a mystery, though. Ultimately, aren't there numerous uses for 3D-printed components that would otherwise require metal?
Actually, there are situations where 3D-printed components are better than metal ones. The problem is that plastic components, even when coated with metal, can't hold their own in some applications.
Let’s look into the advantages of electroplating in details:
1. Raise the Bar for Strength and Longevity
Compared to plastic, metal is usually far more durable. However, you may significantly boost the robustness of your plastic components by covering them with metal.
Electroplating is a great way to increase the tensile strength of a 3D-printed object. Both the inherent strength of the metal and the somewhat increased wall thickness upon plating contribute to this. This means the component will hold up better under stress. This allows electroplated components to remain functional for a longer period in mechanical settings without adding unnecessary weight.
Metal also has superior resistance to abrasion, heat, chemicals, and other forms of environmental stress. This means that 3D-printed objects with plating can withstand harsher conditions for longer.
2. Make the Part Look Better
These days, 3D printers are capable of making surfaces that are both smooth and incredibly accurate. Regardless, the end products are just plain plastic, which isn't necessarily the most appealing option.
Electroplating can greatly enhance the visual appeal of 3D-printed components by adding a smooth, shiny metal surface. The metal coating also makes them feel like actual metal components, which is great for those who are new to prototyping.
3. Boost Electrical Resistance
Plastic is poor at carrying current. It is among the world's most ubiquitous electrical insulators. For this reason, 3D-printed plastic components are not a good option for uses requiring high conductivity.
Conversely, metals are excellent conductors of electricity. The use of electroplating expands the capabilities of plastic 3D printers in countless ways. Coated with metal, they can now function as electrical system components in situations where 3D-printed plain plastic parts would have failed.
Having looked at electroplating 3D prints, it’s also important to have a look at the 3D printing software for creating files and even preparing them for 3D printing. There are many that are available, but we recommend using SelfCAD. It is an easy to use 3D modeling software that runs both online and on Windows and Mac. It combines tools for 3D modeling, sculpting, and rendering features.
The software also comes with an in-built online slicer that you can use to slice your files and generate the G-code to send to your 3D printer.
SelfCAD also offers interactive tutorials, many Youtube videos like 3D modeling tutorials for beginners and 3D modeling 101 series, as well as an academy to help you learn 3D modeling easily.
Get Started With Electroplating for Enhanced 3D Prints
You can get items with improved resilience and longevity through 3D printing and electroplating finishing. Printing and finishing are structured in a way that allows for faster production of more uniform parts than other manufacturing methods. You can put your faith in electroplating on printed parts just as much as the scientists do.
Enjoy powerful modeling, rendering, and 3D printing tools without the steep learning curve.
Need to learn 3D modeling? Get started with interactive tutorials.