This topic contains 4 replies, has 3 voices, and was last updated by 
BHudson 1 day, 6 hours ago.
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danger! the colorFabb glowFill - PLA/PHA over me worn the wire detection contact in the extruder and plastic guide !!
it is a wire PLA yet slightly rough to the touchI think thatthe weak point of this machine is the designated output of the extruder which is extremely fragile!
should that part either metal
how much costs the plastic housing of the extruder?in all kinds of plastic thread that is, what are those that can causes premature worn?
This is a known issue and CEL is working on it. There is a design in process and they are looking into getting it manufactured as of a month ago. I am also working on a do-it-yourself modification for those who are comfortable modifying their Robox extruders.
The sensor flap will be replaced with a metal component. It will take a few more months however to complete the design and get it manufactured and tested.
In the meantime, if you are comfortable taking apart your Robox and modifying the Extruder I can give you instructions on how to fix the problem. You may also be able to obtain a replacement extruder under warranty.
The sensor flap is not extremely fragile as you state and will work as designed for unfilled PLA, PET, and ABS with no issues. Nylon causes faster wear and anything with an additive such as the GlowFill, BronzeFill, and carbon-fiber filled PLA will cause rapid and premature wear of the sensor flap.
My production Robox has over 120 hours of printing on the original parts with no issues, but I have only used unfilled PLA and PET in it.
I am not affiliated with CEL; I operate two Betas and one Production Robox.I am interested by the modifications thank you in advance
Ah, figures, didn’t make the link between glowfill and wear on the extruder but I have to say I printed a lot with glowfill and have worn out my filament detection switch flap multiple times now
@teleporteur My solution to wear on the extruder sensor flap is to glue a small, thin piece of plastic to the extruder sensor flap on the side facing the switch.
Remove the extruder from the Robox.
Remove the screw and filament exist sensor switch cover along with the switch.
Cut a piece of plastic sheet to the approximate size of the sensor flap. I used .040 inch thick plastic cut from a piece of packaging.
Use CA or similar glue to glue the plastic sheet shim to the sensor flap.
After the glue has dried, re-install the switch, switch cover, and screw.
Use a piece of filament to probe in the extruder from the extruder exit port to ensure that the filament is causing the switch to click. You should be able to hear or feel the switch click as you push filament past the switch.
Re-install the extruder in the Robox.
This may not work for you and you may wreck your Robox or extruder. I take no responsibility if you do.
I am not affiliated with CEL; I operate two Betas and one Production Robox.
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