We often get questions from our followers on social media:
“Can alcohol markers be used to color PLA material?”
Today, let's talk about this topic.
What is PLA material?
PLA is an eco-friendly and biodegradable material, commonly used in 3D printed works or craft projects.
Can alcohol markers be used on PLA?
In fact, alcohol-based markers generally do not damage PLA or cause any chemical reaction, so they are safe for normal coloring.
Only if PLA is exposed to highly concentrated alcohol—such as pure rubbing alcohol left on the surface for several hours—might the surface soften slightly. For typical use with markers, this is not an issue and will not affect your coloring results.
Blogger experience reference
The well-known 3D printing creator @Silverback.Creations.21 mentioned:As far as using the alcohol-based markers on the PLA, especially FDM 3D prints, it is totally doable. First, print the model, then prime the model, base coat with the alcohol paint, apply a matte varnish (so there is a barrier between the alcohol and acrylic), then detail/highlight with acrylic, and finally seal the whole model with whatever plastic finish they choose. It should hold up for a long time, and depending on skill level, it should look great.
Interested friends can watch the full video here:
https://youtube.com/watch?v=3FNmwzzJ8dE&si=b-2U6b9gYy2Iangc
✅ Summary
Alcohol markers can be used to color PLA material.
To achieve more even color, stronger adhesion, and longer-lasting results, it is recommended to:
1.Spray a layer of white or gray primer on the model surface before coloring to increase color adhesion, then apply your desired colors.
2.After finishing the coloring, spray a layer of matte varnish that does not contain alcohol to protect the colors.
3.Finally, spray a plastic-specific protective varnish to seal the surface.
This not only enhances the coloring effect but also makes your work more delicate and visually appealing.
