FDM vs. Resin – What is the Difference?
Two technologies dominate the consumer market for 3D printers: FDM (Fused Deposition Modeling) and MSLA/Resin. Both have their place, but for different use cases.
How Does FDM Work?
FDM printers melt a plastic filament in a heated nozzle and deposit the material layer by layer on a print plate. Like a hot glue gun robot, it builds your object from bottom to top.
The result is objects with slightly visible layer lines, more or less pronounced depending on settings. With a layer height of 0.1mm, FDM prints already look very good.
How Does MSLA/Resin Work?
Resin printers dip a print plate into liquid photopolymer resin. An LCD display projects UV light through the resin and cures it layer by layer. The object is pulled from the resin from top to bottom.
The result: extremely smooth surfaces and finest details – barely visible layer lines even at 0.05mm layer height.
Direct Comparison
| Criterion | FDM | Resin |
|---|---|---|
| Entry price | from ~$200 | from ~$150 |
| Material costs | ~$20-30/kg | ~$30-50/liter |
| Print quality | Good | Very good |
| Detail accuracy | Medium | Very high |
| Print size | Large possible | Usually small |
| Post-processing | Minimal | Extensive |
| Odor | Minimal | Strong |
| Safety | Safe | Protective equipment needed |
| Material variety | Very high | Medium |
When FDM is the Better Choice
- Large objects: You want to print vases, enclosures or decorations
- Functional parts: Spare parts, brackets, technical objects
- Getting started: No toxic materials, easy handling
- Material variety: Flexible TPU, heat-resistant ABS, strong PETG
- Budget: Cheap filament for lots of printing
When Resin is the Better Choice
- Miniatures: Tabletop figures, D&D characters
- Jewelry: Rings, pendants with fine details
- Dental/Medical: Dental technology, prosthetics
- Models: Architectural models, product prototypes
- Perfection: When surface quality is everything
Conclusion: What Should I Buy?
For 90% of beginners, an FDM printer is the right choice. It is safe, inexpensive to operate and versatile. If you specifically want to print miniatures or figures, it is worth looking at resin printers like the Anycubic Photon Mono 4.
Many experienced makers have both technologies in use – FDM for large projects, resin for details.