@alpha1beta ESD is relevant for the electronics. But I'm not worrying about breaking it. I've used ESD safe filament in the past.
Junction boxes (for the 230V grid for example) has to be made out of material which is hard to inflame / self-extinguishing (V0). I don't know if such materials exist for 3D printers.
3D-printing bubble: Does anyone know something like that?
@M4x Yes - in my original post I mention Fire Retardant PLA.
https://melovy3d.com/fire-retardant-pla-in-3d-printing/
A few folks make some including Bambu
Dec 3, 2025, 6:47 AM@alpha1beta @M4x For a junction box, I’d prefer other plastics over PLA due to PLA’s very low glass transition temperature. There are flame retardant PETG and other polymer filaments.
ESD safety doesn’t matter for either electronics enclosures or electrical junction boxes outside of laboratory or explosion hazardous environments.