No filament during print but not blocked
Hi all,
I have an MK3S that has been printing fine until recently.
I can swap the filament and nozzles and it heats fine and filament extrudes well during the swap. But when I got to print nothing comes out. It asks me to unload and reload the filament at the beginning of the print and I do, and filament comes out again, but it still doesn't print. Using PLA at 210-220c.
Any ideas? Thanks!
RE: No filament during print but not blocked
Hi all,
I have an MK3S that has been printing fine until recently.
I can swap the filament and nozzles and it heats fine and filament extrudes well during the swap. But when I got to print nothing comes out. It asks me to unload and reload the filament at the beginning of the print and I do, and filament comes out again, but it still doesn't print. Using PLA at 210-220c.
Any ideas? Thanks!
I disabled the fil sensor and it's working now. But the sensor showed 1 so it was detecting filament. Is the next step to clean the sensor? Thanks!
Yes. Fine stringing or dust can jam the moving part causing false reporting. First try a blast of compressed air...
Cheerio,
RE: No filament during print but not blocked
Thanks! I did this but it stopped working again even with the sensor turned off. What's my next step? Thanks again
Check the sensor is reporting correctly (LCD menu) as the next step is disassembly, checking for 'sticky' dust/debris and worn parts.
[This is where a spider attaching one end of a web to the filament can cause disproportionate problems - the web is pulled into the sensor and, being sticky, glues the wrong things together.]
But first do a cold pull in case of a partial blockage - unlikely but easy to do without resorting to the screwdriver...
And, incidental, the filament change at the start suggests you might be using a multi-extruder preset with a single extruder printer..?
Cheerio,
RE: No filament during print but not blocked
Thanks. Could it still be the sensor even though I disabled it?
Good catch. I have a mmu attached but never got it to change filaments correctly, so I gave up on it. This error asked me to reload filament though.
even though I disabled it?
That's why I suggested the cold pull - but we already know this is a compound problem with issues interacting - check the sensor is reporting correctly with and without filament a few times...
And you may find the reload problem goes away with the correct preset.
Cheerio,