Glue for PLA: 10 Best Options
3D printing has revamped manufacturing by making it possible to create items with intricate designs and higher levels of personalization. But it's not uncommon to have to print out multiple pieces that need assembly. When working with PLA (Polylactic Acid), it is crucial to utilize the appropriate glue to achieve strong and long-lasting bindings. In this article, we will discuss several methods for attaching PLA pieces and then recommend the most suitable glues for each of these options.
1. Superglue: Gorilla Super Glue
For a wide range of 3D printing materials, including ABS, PLA, and PETG, Gorilla Super Glue is an essential tool. The versatility and ease of use of this cyanoacrylate adhesive make it ideal for a number of uses. There are two methods to apply it: with a brush for more precise coverage and with a nozzle for broader regions. This gives it a lot of versatility.
Gorilla Super Glue eliminates the need for time-consuming clamping by curing in 10–30 seconds and drying entirely. It is capable of handling a wide variety of materials, including 3D printing, ceramics, rubber, cloth, and many more. This adhesive is great for a lot of tasks because it is strong and affordable. The low cost, quick efficacy, and potential problems with long-term storage make it an indispensable tool for any 3D printer.
Purchase Link: Amazon.
2. Acetone
One application for the powerful solvent acetone is the joining of ABS or HIPS 3D-printed components. This combustible, transparent liquid provides an undetectable bond and seams that are practically impossible to see. When applying a thin layer on bonding surfaces, users should be careful not to get acetone on any delicate components.
Thoroughly cleaning the surface of any grease and debris is an important part of the process. There is a strong plastic layer left over after the solvent evaporates during the bonding process. Avoiding open flames and making sure there is enough ventilation are two safety considerations to take. It is a unique and effective tool for 3D printing glue, but it is only compatible with ABS, HIPS, and materials that dissolve in acetone.
Purchase Link: Amazon.
3. Plumber's ABS Cement
Oatey ABS Cement, often known as plumber's ABS cement, is an excellent choice for joining 3D-printed components made of ABS, PLA, or HIPS. The strong binding that this solvent-based glue delivers is similar to that of acetone, but it has visible coloring.
Following the surface preparation requirements, such as maintaining a clean area and utilizing sandpaper, will provide the best adherence. If you want to make sure the connection is visible, use colored plumber's cement instead of regular adhesive. Be wary if you're using nylon, PETG, or any comparable filament; it won't work with those. The same safety standards that apply to acetone also apply to it because of its volatility and flammability.
Purchase Link: Amazon.
4. Epoxy V-Tech
Epoxy is a resin and hardener mixture that has several uses, including filling and gluing. Because of its see-through nature, the curing mechanism guarantees that PLA-printed items keep their beauty; however, it may take a few minutes to a few hours, based on the brand and sort.
The final outcome is an adhesive that lasts and looks fantastic after sanding or painting, but getting the ingredients just right isn't easy. The VTurboWay Epoxy Resin 3D printer filament is ideal for robust and versatile 3D printing jobs. It cures very hard, so handle flexible filaments with care; otherwise, it's acceptable for most materials.
Purchase Link: Amazon.
5. Polyurethane and Silicone Glues
DAP Polyurethane construction adhesive is an example of a resilient and easy-to-use polyurethane glue. Because of its see-through nature, it is only suitable for exposed seams, yet it ensures a strong bond and works wonderfully with ABS, PLA, and HIPS.
For the application to achieve successful bonding, a minimum thickness is necessary. In contrast to silicone glues, which require a few hours to cure completely, some types of polyurethane offer rapid initial strength. It is essential to conduct small-scale product testing before committing to larger-scale 3D printing projects due to the abundance of alternatives. Remember not to get the adhesives on your skin—that is a crucial consideration while using them.
Purchase Link: Amazon.
6. Hot Glue Gun: Gorilla Full-Size
The Gorilla Full-Size Hot Glue Gun is a new, more practical, and effective way to join 3D-printed parts. The reliable Gorilla brand offers this glue gun, which is compatible with ABS, PLA, and PETG and ensures a strong bond. The combination of its compact design, integrated stand, and ergonomic handle makes this instrument a delight to operate.
Regular glue sticks are compatible with this glue gun, making it perfect for quick and clean applications. The included glue sticks make this package ideal for both 3D printing novices and veterans. You need to be mindful of how long you use the Gorilla Full-Size Hot Glue Gun to prevent it from overheating, but it is a reliable tool for 3D printing.
Purchase link: Amazon.
7. 3D Pen
Unconventional and interesting, the 3Doodler Create+ 3D Printing Pen offers a new way to glue PLA components. This pen's dual purpose as a glue gun and tiny 3D printer makes it ideal for a wide range of 3D printing tasks. You may get exact results with no learning curve because of its accuracy and user-friendly operation.
The 3Doodler pen is compatible with 3D-printed PLA components because it uses PLA filament as a gluing option. Although it isn't the strongest bonding method, it works wonderfully for filling gaps, exquisite detailing, and non-functional portions. Its adaptability to a wide range of aesthetic preferences is a major selling point. Users should keep in mind that this is primarily a 3D printing pen and not an adhesive; thus, they should only anticipate it to work for certain decorative features of their 3D printed objects.
Purchase Link: Amazon
8. Loctite PL Premium Polyurethane Construction Adhesive
For tough jobs, go no further than Loctite PL Premium Polyurethane Construction Adhesive, which adds flexibility to the bonding equation. It offers a strong binding with some pliability, and it can endure harsh environments. The exceptional holding strength of the adhesive guarantees long-term endurance, even in the face of extreme conditions. Because of its reasonable price and ample 4-ounce supply, it is an excellent option for PLA projects. But consumers need to know that once applied, there's no turning back the clock on errors.
Purchase Link: Loctite Products
9. Urethane Glue
Because of its one-component nature, urethane glue is an excellent substitute for superglue since it does not require mixing, unlike epoxy resin. Urethane glues are similar to superglues but also have their own unique characteristics; they are quite affordable and widely available.
To make things even easier for the average user, the application technique is very similar to superglue. The increased curing time of urethane glue, however, is an important consideration. Urethane glue takes about a week to cure, in contrast to the lightning-fast drying time of superglue. Because working with urethane adhesive takes time, you must avoid using the PLA component during this time.
The limited immediate use of urethane glue is due in large part to the long period it takes for parts to be usable. Also, smaller or thinner PLA parts aren't a good fit because the curing process produces high temperatures. Notwithstanding these caveats, urethane glue is still a great option for situations where flexibility and longevity are more important than instant use.
Purchase Link: Amazon.
10. SCIGRIP 10315 16 Acrylic Plastic Cement
For tasks requiring strong bonding, SCIGRIP 10315 16 Acrylic Plastic Cement is an excellent choice. It is ideal for bigger PLA components because of how fast it cures, which speeds up the gluing process. This glue is known for its high strength and fast curing time, making it ideal for jobs that require gluing quickly and smoothly. Be careful not to get it messy, even though it's easy to use.
Purchase Link: Amazon.
Having looked at the best glue for PLA, it’s also important to have a look at the best software for creating your 3D models and preparing them for 3D printing. There are many that are available, but we recommend using SelfCAD. SelfCAD is an easy to use 3D modeling software that comes with all the necessary tools that you need to create both simple and complex 3D models from scratch or edit the ones designed in other programs. Learn the various tools of SelfCAD in the video below.
In addition to 3D modeling tools, SelfCAD also comes with an in-built online slicer that you can use to slice your designs and generate the G-code to send to your 3D printer. The video below shows how the online slicer of SelfCAD works.
Ensuring a Strong and Durable Bond between PLA Parts
Adhesive for PLA is the essential bonding agent that ensures your PLA 3D prints stick together securely and seamlessly. Whether you are working on intricate designs or large-scale projects, the right glue can make all the difference in achieving a flawless finish.
When selecting the perfect glue for your PLA prints, consider factors such as adhesion strength, drying time, and ease of application. Experiment with different types of glue to find the one that best suits your specific needs.
You are free to select a product according to whatever method works best for you. Problems won't arise if you use the correct approach with the correct materials. Think about whether you're using a heavy-duty adhesive method or if you're working with smaller, lighter PLA. That's all.
Enjoy powerful modeling, rendering, and 3D printing tools without the steep learning curve.
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