Unresolved Running her hot, she doesn't like? Stops mid print.

Tried running some PCABS tonight for the first time, after a little reading, I figured good starting temps would be about 275c extruder temp, and 80c bed temp. (I read that hotter may be better, but my current firmware is set at a max 85c bed temp, and 285c extruder temp)

So I tried to print a calibration cube about 5 times, + or - 5 deg on the bed, and +10 to -5 from where I started on the extruder, and each time the printer stopped about 60 seconds into the print (usually at the end of the skirt)... Thought I would try printing from the SD card to check to see if it was a connectivity issue, but have the same problem, except the extruder would quit but the X,Y,Z would keep moving until I paused)... I even tried a different file, (the hair comb from the library) and it wouldn't even make one pass around the skirt before stopping.

Purged and switched back to PLA and it's running flawlessly again @ 210c ext, and 50c bed temps.

My only guess (based on the Barcacules early Robo 3d printer video's I've watched) is that the Arduino board may be overheating causing the fail? My R1 does have the bottom cover so I would guess that this makes the overheating problem worse if this is indeed the case...

I purchased a couple fans the other day thinking I may have to try to increase the cooling under the printer.

(Just finished printing the cal cube on PLA as I type this with no issues)

So am I thinking on the right path here? Overheating? I can't seem to find the print log file? I'm not sure if that would even tell me anything?

Thoughts?

 

I was going to increase them, but upon looking at the firmware I'm currently running, the max bed temp is set at 85c, and the max extruder temp is set at 285c in the fimware already... The bed temp is questionable whether or not it needs or (or can) go higher for PCABS, but I think the extruder temp is fine.

I guess I'll have to pull the bottom cover off and assess the situation...

No errors when it stops, it just stops and the progress bar on the print just speeds through to the finish in about 1-2 minutes. Hit cancel, Z raises a bit, X homes and from there it's non responsive, I have to disconnect and reconnect to the printer a couple times in the software before it will respond to commands again. From there, it's seemingly back to normal.

 

Keep the terminal window open during printing and see if it spits out an error.

 

I will the next time I try it... Question, Can I run the hot end at temp without filament in it to simulate a print and see what happens? Or would that damage something?

 

Yeah you could theoretically run it without filament, though whatever filament left in the nozzle may start to degrade. It "shouldn't" be an issue, but it could...