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Topic: how to clean barrel?

like said above.
i need to extrude 'transparent' PLA filament for a reason. every things ok but i have 2 issues.

where can i get additional melt filter or melt filter nozzle (more precise one)?
how can i clean barrel? it is clean at first but filament turn slightly dark due to dust from barrel (this is my guess).

thank you for your time.

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Re: how to clean barrel?

https://www.filastruder.com/collections … elt-filter

Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura