The last three or four times in a row that my K2 with CFS has run out of filament, it has failed to detect it, and has proceeded to just jiggle the print head in thin air. AI detection did not detect that it was doing nothing, either.
The worst part is that the filament didn’t actually run out. It just stopped feeding. Every single time, what I see is about two feet of filament in the tube, extending a few inches past the buffer.
When I cancel the print, I pull the filament out of the buffer, and it proceeds to use up the remaining two feet of filament correctly as little spools of waste filament.
I can’t tell if this is a problem with the buffer somehow causing excess friction in the final tail inches of the filament, or if this is a software bug. I’m going to swap the buffer for the one that came with the other CFS unit, but I’m not hopeful.
This is costing a lot of time, and a lot of wasted filament. Before I resort to buying a filament splicer and respooling at the halfway mark, I thought I’d ask if anybody else has seen this behavior, and if so, if you figured out a solution.