I'm thinkin about getting one of those ruby nozzles for my printers to basically be able to print anything without ever having to worry about a degrading nozzle. I've seen quite a few videos about it, but I still don't know two things:
- Given the surrounding material is brass and only the tip being out of ruby, doesn't the filament path where the molten filament gets pushed through still wear out over time (heavily so with CF or GF filament)?
And also
- How good are the cheaper ones, specifically the "DUROZZLE" one (since that's the one I could find that's 0.6mm and cheap)?
The filament path does degrade. You want your filament to travel through your PTFE tube and nozzle with the smallest air gap possible (from extruder to nozzle- filament roll to extruder doesnt matter as much).
Due to wear over time, your PTFE tube and nozzle are both "wear items" like the brakes on your car.
Here's a great article with photos of some new and used nozzles that have been cut in half to show the wear.