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question regarding abrasive materials

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I have a 3D Solex extruder for my UM3.  Upon reading some of the threads related to the S5 coming out with the abrasive ready nozzles, and wondering why they were only for the S5, there were posts about the abrasive materials also potentially affecting the feeders.  Since I am using some abrasive materials on my UM3 such as Glow in the Dark and conductive PLA, I have two questions:


1) Should I be worried about my feeder wearing out over time?

2) Is it something easily replaced?  I've done searches for spare parts, but haven't found a site that sells specifically replacement feeder mechanisms for the UM3.


Thanks in advance, and I apologize if I didn't search the forums or google thoroughly enough to have found the answer myself.  





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I'm not sure if this will help you, but I have a UM3 and, in preparation for printing nylon/CF I just ordered the Bondtech DDG upgrade kit.  I believe the stock extruders' filament feed gears will wear at an accelerated rate with abrasive filaments.


I've also read that the Bondtech feeders improve standard filament feed rates and reliability. 


I ordered mine from the gr5store.  I see you are in the US, you might want to contact them.  I've ordered from them a few times, a hardcore, everlast nozzles, bowden tubes, as well as the feeders.  I've always been happy with the knowledge level, support and pricing.


Disclaimer, I don't work for them, I'm not even in the same country.  Here's a link.  gr5 posts here as well.



Good luck!



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