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"Even 'tough' resins are still weaker than e.g. PLA." I'm not so sure of that. All of the PLA hinge assemblies sent to me from a customer for use in their clam
by lightedman 2y ago
"Even 'tough' resins are still weaker than e.g. PLA."
I'm not so sure of that. All of the PLA hinge assemblies sent to me from a customer for use in their clamshell testing units broke pretty quickly, like within a month or two of install. My resin-printed ones are still holding strong 3 years later.
- PrivateButts 2y agoIt all depends on your application and what kind of strength you desire. PLA is extremely stiff and strong in tensile forces, but has a tendency to fail spectacularly when you step just outside of it's comfort zone. CNC Kitchen posts videos from time to time testing material properties of various printable materials. https://youtu.be/Yjm7aRKISMI?si=8v2tQ4Inc_kEtvCH https://youtu.be/Yjm7aRKISMI?si=8v2tQ4Inc_kEtvCH
- SOLAR_FIELDS 2y agoAnd resin prints are used in injection molding applications, a place where PLA would fail spectacularly. They’re also used in dental molds, a place where PLA would dissolve in the persons mouth
- Filligree 2y agoLike sibling says, it depends on your definition of 'strength'. For your application I'd probably recommend PETG or Polycarbonate. It's also reasonably likely that your resin printers are solid resin, while the PLA likely wasn't solid PLA... but that depends on slicer settings, so I wouldn't know. FDM printers are mostly used for prototyping. If you're doing that in a commercial context then the design time vastly outweighs the material and hardware costs, so.. polycarbonate would be a good default. It's hellishly strong, even when 3d-printed.