Core One: How does the side filament sensor work?
May be an obvious question to some, but I had a print that spanned multiple spools yesterday, and only the extruder sensor gave me the out of filament warning. I was able to swap the filament without issue, but it meant that I had to pull the PTFE tube quick release on the Extruder instead of pulling it out of the side insert.
Should the side filament sensor have stopped the print?
The side sensor passed the startup checks, but it is a kit build so possible that I did something wrong.
RE: Core One: How does the side filament sensor work?
I've wondered the same TBH...the filament is too far in when the first sensor is triggered. I havent had a runout yet but assumed the printer would sense this and then the extrduder would retract enough so you can grab the end to pull the remaining filament out......
RE: Core One: How does the side filament sensor work?
I've wondered the same TBH...the filament is too far in when the first sensor is triggered. I havent had a runout yet but assumed the printer would sense this and then the extrduder would retract enough so you can grab the end to pull the remaining filament out......
I've only had one filament run-out and wasn't there to see it live but there was still about a cm of filament sticking out of the PTFE tube by the spool that I could grab so I assume what you described is what happened.
RE: Core One: How does the side filament sensor work?
I just had an issue where the roll ran out, however the filament was pushed to just inside the end of the PTFE tool. There was not way to grab the end to pull it out. In the end I remove the PTFE tube from the extruder, pushed the filament 1/2" or so, and was able to grab the end.
Is there a better solution?
RE:
I just had an issue where the roll ran out, however the filament was pushed to just inside the end of the PTFE tool. There was not way to grab the end to pull it out. In the end I remove the PTFE tube from the extruder, pushed the filament 1/2" or so, and was able to grab the end.
Is there a better solution?
Was that after you let the printer "unload" the filament via the menu, i.e. let the extruder push the filament back? I thought the distance between the actual side filament sensor and the end of the short PTFE tube is chosen such that the extruder can push the filament back just far enough to make it accessible.
Alternatively you can let the printer purge the old filament strand out through the nozzle and follow up with filament from a new roll which you push in manually until the extruder grabs it.
RE: Core One: How does the side filament sensor work?
May be an obvious question to some, but I had a print that spanned multiple spools yesterday, and only the extruder sensor gave me the out of filament warning. I was able to swap the filament without issue, but it meant that I had to pull the PTFE tube quick release on the Extruder instead of pulling it out of the side insert.
Should the side filament sensor have stopped the print?
The side sensor passed the startup checks, but it is a kit build so possible that I did something wrong.
After I had built my kit, the side filament sensor got stuck in the "I see filament" position once I inserted the first strand of filament, then removed it again.
The little lever inside the sensor housing had moved freely when I installed and checked it according to the build instructions. But it turned out that I had not pushed the flat magnet (which is 6 mm wide instead of the advertised 5 mm) into the plastic lever quite far enough. So it stuck out just far enough to touch the lid of the sensor housing once that was installed, jamming the movement of the lever enough to hold it in the "filament is inserted" position.
Opening the filament sensor housing and pushing the magnet down a few 1/10 mm further solved the problem.
RE: Core One: How does the side filament sensor work?
I think there is a setting in printer somewhere ( will need to check once i'm home) that you get to toggle the filament sensors, which ones to be active. Perhaps it has to do something with that? The side sensor trigger is turned off?
RE: Core One: How does the side filament sensor work?
Check the value the side filament sensor is reporting. You can get to this in the Info --> Sensors menu. Does the value change appropriately when inserting/removing filament?
When this sensor detects run outs the printer pauses, retracts the filament, and unloads so there should be about 1cm of filament sticking out of the side PTFE tube so you can easily remove what's left without having to do disassembly inside the printer. Make sure the PTFE tube on the side mount is pushed fully into place. There should only be about 2cm of PTFE sticking out of the handle.
RE: Core One: How does the side filament sensor work?
The filament sensor is working correctly, it detects when I insert new filament and when the filament is removed. The issue I have is when I ran the spool empty, something I try to avoid but happens, it detected the filament going past the sensor and stopped the print and retracted filament. However it stopped just before the end of the tube, no filament was protruding so there was nothing to grab. It was almost flush with the end of the tube, so it does not need to be retracted much more.
There was a suggestion on reddit, and I see a comment on the assembly instructions, to ensure the PTFE tube is pushed in all the way. I tried that last night with a good amount of force but it did not move. The length of the tube appears correct from the photos in the assembly manual.
Perhaps the bowden tube is not inserted all the way on the other side of the sensor, I'll check that today. It appears that the path is just slightly too long.
This is PETG, not a flexible filament, there was no issue with it being pushed by the extruder other than it didn't go far enough.