T3DP3D Kossel Mini fine-tuning problem
Posted by Sp@ckler
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T3DP3D Kossel Mini fine-tuning problem December 09, 2015 05:11PM |
Hi all!
It's been quite a while since I've got my kossel ( Think3DPrint3D "old" model: RAMPS, j-head & heated bed).
First delta i've had, it makes "almost" nice PLA prints even though there seems to be some subtle (feels smooth to the touch), irregular banding-layering effect as seen in the picture.
(don't mind the top of the middle tower, I was fiddling with the fans)
This is pretty much the best I can do, but still some irregular lines; I'll post moar pics if necessary.
Now i've tried a whole bunch of thing to no avail.
Switched filaments (i have tried several suppliers high-end & middle-shelf filaments; however the banding effect is less pronounced than with typical filament bad tolerance)
Tried diffrent extrusion temperature (from 185 to 220; only PLA)
Replaced cooling system (switched from centrifuge fan to twin 30mm fan)
Re-assembled & re-calibrated (a bunch of times)
Checked motor overheating & stepper driver voltage
Checked the spider & hot-end attachment plate
Loosened & re-tightened the delrin pieces & carriages
Checked the belts
Enclosed the printer in an insulation chamber (fancy name for a wooden box)
Tried another hot-end
Pid-tuned the extruder & bed several time
So far I thought there was something wrong with the extrusion itself, but now I'm not so sure; the slight layer offset is rather different between two prints but two calibration towers printed at the same time show an almost identical pattern.
I admit I haven't tried ABS yet because the printer is in my living room, but I'll probably cross that bridge if I have to.
I'll try to use another extruder instead of the RepRapPro that came with the kit; in the meantime I'm running out of ideas, does anyone has a suggestion?
It's been quite a while since I've got my kossel ( Think3DPrint3D "old" model: RAMPS, j-head & heated bed).
First delta i've had, it makes "almost" nice PLA prints even though there seems to be some subtle (feels smooth to the touch), irregular banding-layering effect as seen in the picture.
(don't mind the top of the middle tower, I was fiddling with the fans)
This is pretty much the best I can do, but still some irregular lines; I'll post moar pics if necessary.
Now i've tried a whole bunch of thing to no avail.
Switched filaments (i have tried several suppliers high-end & middle-shelf filaments; however the banding effect is less pronounced than with typical filament bad tolerance)
Tried diffrent extrusion temperature (from 185 to 220; only PLA)
Replaced cooling system (switched from centrifuge fan to twin 30mm fan)
Re-assembled & re-calibrated (a bunch of times)
Checked motor overheating & stepper driver voltage
Checked the spider & hot-end attachment plate
Loosened & re-tightened the delrin pieces & carriages
Checked the belts
Enclosed the printer in an insulation chamber (fancy name for a wooden box)
Tried another hot-end
Pid-tuned the extruder & bed several time
So far I thought there was something wrong with the extrusion itself, but now I'm not so sure; the slight layer offset is rather different between two prints but two calibration towers printed at the same time show an almost identical pattern.
I admit I haven't tried ABS yet because the printer is in my living room, but I'll probably cross that bridge if I have to.
I'll try to use another extruder instead of the RepRapPro that came with the kit; in the meantime I'm running out of ideas, does anyone has a suggestion?
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