the object i was printing was an Apple Watch charging dock. The Chac Mool one from MyMiniFactory. I've tried printing it 4 separate times. each time the print just stops. Initially i thought it was getting stuck. But having just witnessed the stopping. i now know that is not the case. the printer freezes. it claims the hotend and bed are still at printing temp though they are cooling and soon cool to touch. i have tried shutting down and resuming print but the carriage locates incorrectly and lowers too far crashing into the print and dislodges it from the bed. seems to happen after the 3-4 hours of printing mark.
anyone have any ideas. this is really becoming frustrating. i'm going to try another long print. i seem to remember it happening on another but not positive so i will try it to be sure its not the file.
Update: i just got the OctoPrint running on my old R-PI. And now is all fine.
A bit strange that the touch display controller is not working properly.
Thanks for reply Ryan!
I had cases where there was no support material. Instead of printing in the "air" the printer stopped. In most cases the head moves then to Y-end.
But in that case was already all done what might cause trouble.
About overheating, that might be the reason.
But a message in that case at the display would be nice.
I have here most time of the year almost 30°C. Will see if i get an 120mm PC fan running under the board. Bit trouble to connect it direct to the power supply since that have 24V. An step down converter should do the job.
I'll report about the results.
So, one thing I've learned. Check the model you're trying to print and make sure it doesn't have any bad Geometry.
You check that by going to Cura and changing the Layer View from Solid to XRay. If there are any red areas that means there is some bad geometry.
Bad Geometry can cause the print to fail.
Though, I have had a few times (very uncommon for me) where the printer just stops and won't continue. I think for me when that happened it was overheating.
Any news about that?
I got after a series of fails, within the past days, yesterday two prints done without any problem and with a good quality. Both just 30 minutes jobs.
Later happened it again. The printer just stops wihtout any message.
Interesting thing is that the print was not as precise as the two succesful before. So, i have some small bubbles and the support structure looks worst.
My next try will be without cooling fan. I had one succesful print without. But i dont think that is the reason for fails.
I have been having a problem that appears similar to this but I'm beginning to think its somthing different. My printer had been working well but since i had a print that failed and caked the hotend in plastic i have had a series of issue's. The current one is that I am having trouble getting my bed to heat up and when I start a print there is good chance it will stop at some random point. There seems to be no consistent factor that affects wheather the bed will start. I double checked the wiring yesterday when the bed was not heating and it seemed sound, but no heat. A little later I tried again and it worked so i gave all the wires another wiggle and it made absolutely no difference and it's still working now. I am wondering if there is a fault in the bed and that is causing the print failures. As far as I can remember I dont generally get an error message when a print fails midway. I did update the touch screen firmware but it has not make any difference.
I believe the issue is solved. I had a lot of successful prints and the failed ones most got a reason. Please put a date in your updates release page!
I want to use the printer with the octopi, seems that I could have more control. Is the communication between the board and octopi and touchscreen working well now? or should I disconnect the touchscreen to use octopi better?
@Ernie Bausch @Adrián Chacón Ordóñez We believe this issue to now be solved, updated touch screen firmware can be found here:
https://www.makertech3d.com/pages/downloads
So apparently my prints are failing for some other reason. I'm using makertech cura (the last update provided) for all the slicing, and even with benchy I'm getting strange errors. I've tried multiple SD cards, so I don't know what the problem is. These are the errors reported by pronterface when my prints stall...
echo:Unknown command: "M101&Fvƒf“F†-f–æ†6F–æ&–F¦†¦N224 G0 F2400 X169.834 Y51.294"
Error:Line Number is not Last Line Number+1, Last Line: 223
[ERROR] Error:Line Number is not Last Line Number+1, Last Line: 223
Resend: 224
Error:No Checksum with line number, Last Line: 223
[ERROR] Error:No Checksum with line number, Last Line: 223
Resend: 224
Error:Line Number is not Last Line Number+1, Last Line: 223
[ERROR] Error:Line Number is not Last Line Number+1, Last Line: 223
Resend: 224
Looks like some sort of corruption, but like I've said, it always happens at a random point during prints, not the same spot and with different SD cards. Is there a problem with one of the boards in the printer?
We're looking into the freezing issue but it's very likely that it's being caused by serial conflicts between the raspberry Pi (octprint) and the touchscreen display both trying to control the printer at the same time.
Currently the best advice we can give is to disconnect the touchscreen when using octoprint and vice versa.
I got an idea of what is happening, at-least when almost all your prints fails. Its gonna sound