How to Glue PLA
Fleeting- External reference: https://3dinsider.com/how-to-glue-pla/
How to Glue PLA: Tips and Best Products - 3D Insider
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standard cyanoacrylate of “super glue” is one of the easiest ways to bond PLA
Cyanoacrylate glue is best applied on a rough surface for optimal penetration. For this reason, it would be a good idea to glue your 3D printed parts together before sanding them smooth.
super glue creates a very strong bond that can resist a good deal of compression, impact, and tensile forces. However, it does not have excellent shear strength. If the bond you’re creating needs to withstand rugged conditions, you may have to look for more heavy-duty alternatives to super glue.
flexible nature of a urethane bond makes it more suitable for heavy-duty applications where load across different directions is expected.
Urethane adhesive works best when applied to rough surfaces for better penetration.
we advise waiting at least a week for a urethane bond to set
urethane glue is an exothermic process that can raise temperatures up to 40 degrees Celsius
we do not recommend using urethane glue for very small or thin sections of a PLA print
Two-part epoxy resin is another good all-around option for gluing PLA prints
This clear epoxy resin from VTurboWay is a viable option that does not release any toxic fumes
According to the product specs, the VTurboWay epoxy resin has a working time of about 30 minutes.
thick enough to fill in any gaps in your 3D
The full curing of this resin will take approximately 72 hours
Bonds created by epoxy resin are extremely tough. When applied to PLA, the PLA parts are more likely to break apart before the epoxy resin bond will break. For decidedly permanent assemblies, bonding the parts with an epoxy resin is one of the best ways to ensure durability.
Acrylic glue is often used to glue together Plexiglass parts, but it can also be used for PLA under highly controlled conditions. The bonds created by acrylic glue are tough enough to be used in heavy-duty industries such as construction, maritime, and product assembly
a small amount of cut-up PLA filament with the acrylic glue. The glue itself is rather thin, so dissolving some PLA will give it a bit of volume. This is very similar to how ABS glue is made by mixing acetone with a small amount of ABS
When working with acrylic glue, take note that it emits very irritating fumes at room temperature.
quite an unconventional solution, but if you have a 3D pen, you may use it to bind together PLA parts much like a soldering iron.
terms of strength, bonding using an application of molten PLA is just as reliable as cold welding two pieces of PLA together. In the absence of a 3D pen, some people have even tried to simulate this phenomenon by melting some PLA filament with an actual soldering iron. The molten plastic can be very hard to control under this method, but the quality of the results should be similar.