Problem with rear side of Test Cube
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The extruder temp is 235C and I have experimented with bed temps from 80C to 120C. I didn't really notice much change, except that with a bed of 80C, adhesion was deteriorating.
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I haven't recalibrated the extruder, but I think my temperature is consistent. The window in the browser that shows the temp is consistent. I'm just running the cube now, so that I can post the temp readouts.
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@dmbgo said in Problem with rear side of Test Cube:
I haven't recalibrated the extruder, but I think my temperature is consistent. The window in the browser that shows the temp is consistent. I'm just running the cube now, so that I can post the temp readouts.
I didn't see that you mentioned the kind of filament you are using.
For PLA I use 200 for the extruder and 60 for the bed but keep in mind my 200/60 may not match you 200/60 - it all depends on the thermistors and how correct the thermistor configuration values are.
For speed I use 60 mm/s to 90 mm/s depending on desired quality with the first layer at 15 mm/s.
Frederick
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@dmbgo Can you File->Save Factory File as... and post it?
That way I can see your slicer settings and all that.
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Thanks Fredrick, I am using ABS.
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No worries @alankilian here it is:
[0_1610836772941_xyzCalibration_cube.factory](Uploading 100%) -
@dmbgo Try that upload again please.
Also, what filament are you using?
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I print PLA at 60C bed and 205C extruder, so you're significantly hotter than I am.
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I'll try renaming it to *.txt, you'll have to change it to *.factory:
xyzCalibration_cube.factory.txt -
I am using ABS filament.
Regards David Maher
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On the filament roll, it recommends Extruder 220 to 260C Bed 100 to 110C
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@dmbgo said in Problem with rear side of Test Cube:
I am using ABS filament.
Do you have a heated enclosure?
Frederick
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I'm afraid I'm out of my experience zone with ABS.
I have read not to use fans for the first 3 layers, but that's not your problem.
Do you see filament extruding on the back cornets?
Do you hear your extruder struggling/clicking when that happens?
Can you rotate the cube 180-degrees to see if it then happens on the front?
Can you rotate the entire printer 180-degrees to see if it changes due to airflow?
Do you have an enclosure?
My only ABS experience is using a Stratasys where everything is controlled for me and it works perfectly.
Someone with more ABS experience will probably jump in next and hopefully be able to help you more than I can.
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I do have, but the printer isn't in it at present while I'm working on it. I usually drop the bed temp down when the printer's in there.
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From what I have read ABS really needs a heated enclosure BUT I don't know if that is related to your problem.
Frederick
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@alankilian said in Problem with rear side of Test Cube:
1/ Do you see filament extruding on the back cornets?
2/ Do you hear your extruder struggling/clicking when that happens?
3/ Can you rotate the cube 180-degrees to see if it then happens on the front?
4/Can you rotate the entire printer 180-degrees to see if it changes due to airflow?
5/Do you have an enclosure?1/ Back cornets?
2/No clicking, extruding nicely when I move it up and extrude some filament.
3/I should have mentioned that I had done that, it still happens on the rear (mainly)
4/The pinter is on a wheeled trolley, I have tried that. Ambient temp is 18.4C atm. -
"From what I have read ABS really needs a heated enclosure BUT I don't know if that is related to your problem. Frederick"
Yes, I found that out a while ago, which is why I made the one in the pic. It is made from 50mm expanded foam, coated with thin fiberglass panels. The material came from an old coolroom.
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But the issue remains. Any other helpful suggestions, they've been good so far?
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@dmbgo said in Problem with rear side of Test Cube:
But the issue remains. Any other helpful suggestions, they've been good so far?
Instead of printing a cube can you create a model of a disc, say, 50 mm in diameter and 5 mm thick?
If you can print it using you normal settings.
Frederick
