I have now had TWO Flux Printer. My first flux was giving me headaches with mainly the issue of failed filament extrusion. I would get models with lines of air, “dry” layers where the filament seemed like sand, and weak adhesion of layers. But then my FLUX died with no USB or WiFi communications at all. The FLUX team was GREAT by the way. They talked me through it all and quickly offered a replacement. The new FLUX is working well, but I was still having extruder problems that I was unsure were hardware or software related.
Then someone on the Thingiverse.com FLUX Forum suggested a filament filter/oiler - a small box with sponge inside that you apply oil to… then you feed your filament through it. It cleans the filament of dust and/or moisture while adding a VERY thin coat of oil to the extruder parts.
I made one with my most agreeable filament that failed the least (FLUX brand PURE) and made one… takes about 40 minutes. I inserted a sponge cut to fit and applied fine machine oil (like for sewing machines). Then I loaded it with my most trouble making filament (Yellow PLA from a local shop on a cardboard reel - I have NEVER gotten a good print with it) and started a small model.
There have been NO pings, bangs, or cracks of sound from the filament backing up. There have been no nozzle clogs as there were before. There have been NO weak or missing layers and no “dry” PLA layers. I can report that this MAY be the best thing since I got my printer… the most excitement I have had.
Check out the print and thread at: http://www.thingiverse.com/groups/flux-users/topic:4890#comment-813216
I will report more later as I make larger prints overnight.