I’ve heard of stringing, but this is ridiculous. After several hours of printing, the Artisan starts printing in mid-air. Why is this happening?
g?
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I did find that the left extruder (printing PETG) had jammed in the extruder. I think the gears push faster than the hot end can accept so the filament gets folded inside between the gears and the hot end.
How can one avoid this problem?
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Do an E steps calibration.
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Left extruder is white?
Looks like white stops printing, orange continued and then just printed into air.
Yo can try to reduce the retraction distance. Or decrease the temp. But i hadnt this behaviour often.
E steps on dual extruder matches mostly.
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Did you print a prime tower? - This would prime the nozzle)
May share a few more settings?
Slicer?
Speeds?
Retraction?
I’m currently checking the E step calibration. I’ll get back to everyone once complete.
A better description of the process leading up to the problem wiuld help.
The print process was nothing special - just a normal print using white PETG in the left extruder and reg PLA in the right. PETG at 235 degrees and PLA at 200 degrees. 65 degree bed temp.
Yes, I was printing a prime tower.
I have tried to do an E step calibration, but either on the wifi or USB direct connection, issuing an M503 command, results in nothing aside from an OK response. No other output from the Luban workspace command.
What am I missing?
Lew
And yes, I configured the serial port (COM3 in my case)
115200 baud
8 data bits
no parity
flow control NONE
Have you followed the steps on Teaching Tech’s page?
Though, I don’t expect this is part of your original problem.
I personally found the E-Steps factory setting spot-on for my DX head - never changed it from default.
I’m not sure if the gears push faster than the nozzle can accept - unless you go very high print speed and/or very large layer heights. If the gears “eat” your filament, I’d recommend to check the following:
- Retraction settings: If you have many retractions in short succession, this may gnaw the filament away. Most slicers allow to limit the number of retractions within a certain feeding window.
- Temperature: If the nozzle is too cold, the filament may be too gooey and give too much resistance. Seeing that you print PETG at 235°, I’d say that should be enough. PLA @ 200° may be too low for some brands. I also found that if you use a tiny nozzle (0.2 mm), you may need to add 5-10° for good flow rate as compared to 0.4mm nozzles.
- Standby temperature/heat up time: When printing with both nozzles, the inactive nozzle is set to a standby temperature and in time for its next job will heat up again. However, if the heatup time is set too short, the nozzle has not reached target temperature when it is supposed to start printing. Check the regarding settings in your slicer, and observe the temperatures on the touchscreen while watching the print.
Maybe there’s more, but this is what comes to my mind.
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But in trying to check and set the E step calibration, I first enter M503 in the workspace console. But it only ever returns “OK” - no other output. Believing Artisan can only return data via the USB connection, I tried there with a laptop connected to the touchscreen with the same results.
Could someone or Snapmaker support please publish a procedure for connecting and entering G Code commands into the Artisan.
There are numerous guides for G code commands, but no instructions on how to get the printer to act upon any of them.
Yep same problem latest firmware and luban usb connected and M503 returns only ok can someone help
What happens when you use M92 ?
Just the same response: “OK”
In the case that the terminal response is only “ok”, connect to the machine with a serial connection (this would bypass the touchscreen and the controller will respond directly).
It would help to open a Bugreport-ticket for Luban and Artisan.
https://snapmaker.formcrafts.com/support-ticket
SM2, Artisan: USB-A to Mini USB cable
This connection method is not as secure as printing from touchscreen for printing because the connection could be lost when the pc goes to sleep.
https://wiki.snapmaker.com/en/Snapmaker_Luban/manual/connect_with_machine_via_serial_port
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Yes, I have tried using the USB connection to a separate laptop. The results are exactly the same - I only receive an “OK” in response to any G code command.
I have also used Pronterface both with a desktop (on WIFI) and laptop (on USB) which both return a full complete response. So it seems to me that the Luban workspace console simply doesn’t act as advertised.
Lew