Comparing the basic working principles of FDM and resin techniques would be enough, right? I'm curious about which one has advantages in which situations. What should I pay attention to in terms of part durability, detail precision, and ease of maintenance?
What's the difference between FDM and resin in 3D printing?
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The key differences between FDM (Fused Deposition Modeling) and resin printing really depend on the use case. FDM builds parts by melting thermoplastic filaments layer by layer, making it ideal for durable parts like robotic components or household appliances. I use FDM for my own projects, especially with PLA—printed parts stay strong even over time, whereas resin parts can be brittle.
On the other hand, resin printing (MSLA/SLA) relies on liquid resin hardening under UV light, excelling in fine details and precision—the backbone of 3D printing for things like miniature figures or dental models. Resin requires an alcohol bath for post-processing and needs a well-ventilated area due to toxicity, while FDM just needs filament changes and occasional nozzle cleaning. From my experience, resin printing can be frustrating when support points don’t come out cleanly—you have to soak the model in alcohol—but FDM avoids those kinds of hassles.