MK4+MMU3 confusion
I changed my nozzle from .4 to .25 for a special project, and started running calibrations.
They were all easy/OK until the filament sensors, and that's awkward or I'm misunderstanding it.
My MMU3 has 5 filaments threaded through it, and has been running.
The filament sensor wants me to insert a piece of filament. I assume this means to disconnect the tube between the MMU3 and the MK4, and insert a scrap of filament there, right? Anyway I did stick a scrap in this way, but couldn't find a piece longer than 2" (50mm), and that didn't seem to be convincing, so I couldn't finish that calibration. Everything had been working, so I just tried to go on, and that kind of works, but the printer never forgets that the calibration isn't finished, and Connect shows a complaint and I have to somehow forge ahead anyway. How can I get the calibration requirement to go away? The printer and MMU are working OK.
Best Answer by pink_clown:
The 2 inch filament is far enough, but you have to push hard because during the FS test the nextruder gear is not moving, so it cannot pul the filament. The filament load principles between MK4 and MK4/MMU are different but seems the FS calibration does not distinguish between them.
For MK4 during the load process the filament first passes the FS ( always manually inserted) and based on its trigger the printer starts the nextruder gear moving.
MK4/MMU load process starts the nextruder gear after the filament is pushed from MMU for a certain length. At the moment the gear grabs the filament the FS is triggered.
The proper FS calibration, should take in account if there is a poor MK4 or MK4/MMU machine.
RE: MK4+MMU3 confusion
Cut a 4 inch piece from a reel and use that for calibration
RE:
The 2 inch filament is far enough, but you have to push hard because during the FS test the nextruder gear is not moving, so it cannot pul the filament. The filament load principles between MK4 and MK4/MMU are different but seems the FS calibration does not distinguish between them.
For MK4 during the load process the filament first passes the FS ( always manually inserted) and based on its trigger the printer starts the nextruder gear moving.
MK4/MMU load process starts the nextruder gear after the filament is pushed from MMU for a certain length. At the moment the gear grabs the filament the FS is triggered.
The proper FS calibration, should take in account if there is a poor MK4 or MK4/MMU machine.
RE: MK4+MMU3 confusion
Thank you, this helped.
Dave