ABS sticking to extruder
Posted by SkeptikRC
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ABS sticking to extruder September 09, 2015 04:00AM |
Registered: 8 years ago Posts: 22 |
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Re: ABS sticking to extruder September 09, 2015 06:46AM |
Registered: 8 years ago Posts: 166 |
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Re: ABS sticking to extruder September 09, 2015 01:43PM |
Registered: 9 years ago Posts: 722 |
Hi,
Don't try to jump as fast as that from extreme values.
If you want to calibrate temperature to match your filament need, print a calibration tower.
BUT I believe your problem is not due to extrusion temperature.
Check first the bed adhesion and then do a proper extruder calibration.
++JM
Don't try to jump as fast as that from extreme values.
If you want to calibrate temperature to match your filament need, print a calibration tower.
BUT I believe your problem is not due to extrusion temperature.
Check first the bed adhesion and then do a proper extruder calibration.
++JM
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Re: ABS sticking to extruder September 09, 2015 04:14PM |
Registered: 8 years ago Posts: 22 |
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Re: ABS sticking to extruder September 09, 2015 04:21PM |
Registered: 8 years ago Posts: 22 |
Quote
J-Max
Hi,
Don't try to jump as fast as that from extreme values.
If you want to calibrate temperature to match your filament need, print a calibration tower.
BUT I believe your problem is not due to extrusion temperature.
Check first the bed adhesion and then do a proper extruder calibration.
++JM
When it prints close to the bed the plastic comes out in small blobs so I don't think I can print. The higher the z axis gets the smoother it runs.
Edited 1 time(s). Last edit at 09/10/2015 02:57AM by SkeptikRC.
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Re: ABS sticking to extruder September 09, 2015 04:24PM |
Registered: 8 years ago Posts: 166 |
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Re: ABS sticking to extruder September 09, 2015 04:50PM |
Registered: 9 years ago Posts: 722 |
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Re: ABS sticking to extruder September 10, 2015 02:57AM |
Registered: 8 years ago Posts: 22 |
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Re: ABS sticking to extruder September 11, 2015 06:01PM |
Registered: 8 years ago Posts: 126 |
110 seems a bit high. I print abs without problems at 85C bed.
But if your nozzle is hot enough to melt and extrude the abs, and you have curling up and clumping on to the nozzle, I would think that either your nozzle is too close to the bed and the abs can't get out the nozzle easily, or it is correct and the abs is not sticking to the bed.
Try dropping the temp to 85C bed and try this alternative method - no spray / slurry / glue, etc https://www.3dhubs.com/talk/thread/alternate-print-surface-abs-no-slurry
Due to the nature of PVC, ensure you have good ventilation.
But if your nozzle is hot enough to melt and extrude the abs, and you have curling up and clumping on to the nozzle, I would think that either your nozzle is too close to the bed and the abs can't get out the nozzle easily, or it is correct and the abs is not sticking to the bed.
Try dropping the temp to 85C bed and try this alternative method - no spray / slurry / glue, etc https://www.3dhubs.com/talk/thread/alternate-print-surface-abs-no-slurry
Due to the nature of PVC, ensure you have good ventilation.
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Re: ABS sticking to extruder September 12, 2015 12:30AM |
Registered: 8 years ago Posts: 14 |
Hey there, I was having a similar problem when I first set up, this worked for me:
first I calibrated my extruder with help from this video
[www.youtube.com]
then i figured out my optimal adhesive combination
bed heat from 85-100 anywhere in that range works for me
and a glue stick from the dollar store, I just clean off my bed with a razor blade every 2nd or 3rd print
Hope this helps =]
Edited 1 time(s). Last edit at 09/12/2015 12:32AM by straton jd.
first I calibrated my extruder with help from this video
[www.youtube.com]
then i figured out my optimal adhesive combination
bed heat from 85-100 anywhere in that range works for me
and a glue stick from the dollar store, I just clean off my bed with a razor blade every 2nd or 3rd print
Hope this helps =]
Edited 1 time(s). Last edit at 09/12/2015 12:32AM by straton jd.
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Re: ABS sticking to extruder September 12, 2015 08:16AM |
Registered: 9 years ago Posts: 722 |
Hi,
At glass transition temperature, the material is flexible but keeps its shape.
Glass temperature :
ABS +-105°C
PLA +-63°C
So 110°C is a bit high, but 85°C is realy too low.
With a bed at glass transition temperature, don't cool the part too much with ABS,
or you'll experience wraping even with a proper bed temperature.
I would say cooling fans to 30-50% maximum.
So minimize bridges on your parts.
++JM
The bed must be set close to the glass transition temperature of the material.Quote
DaveOB
110 seems a bit high. I print abs without problems at 85C bed.
At glass transition temperature, the material is flexible but keeps its shape.
Glass temperature :
ABS +-105°C
PLA +-63°C
So 110°C is a bit high, but 85°C is realy too low.
With a bed at glass transition temperature, don't cool the part too much with ABS,
or you'll experience wraping even with a proper bed temperature.
I would say cooling fans to 30-50% maximum.
So minimize bridges on your parts.
++JM
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Re: ABS sticking to extruder September 12, 2015 08:40AM |
Registered: 8 years ago Posts: 126 |
Quote
J-Max
So 110°C is a bit high, but 85°C is realy too low.
With a bed at glass transition temperature, don't cool the part too much with ABS,
or you'll experience wraping even with a proper bed temperature.
I would say cooling fans to 30-50% maximum.
So minimize bridges on your parts.
++JM
OK. I suppose different things work for different people.
I have been running 85C bed for ABS for over a month and never had a print lift or warp.
Also the reading I have done says you should not be using a print cooling fan for ABS. Maybe that's why you're having to go up to 105 to counter the cooling you shouldn't be doing ?
Also I use an aluminium bed, but with the plastic cover, it shouldn't make any difference if it is glass or aluminium.
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Re: ABS sticking to extruder September 12, 2015 11:53AM |
Registered: 9 years ago Posts: 722 |
Hi,
A month is a too short period of time to make any universal rule.
To set your bed ways under the glass transition temperature
only means the early layers are not stretchable any more.
We use heating bed because we want the first layers to stay flexible.
Through, maybe 85°C allows a good bound on your print surface.
But these are two different things.
Like you, I don't use cooling fans with ABS.
But bridges and overhangs can't be very clean.
Each material have its own properties.
++JM
A month is a too short period of time to make any universal rule.
To set your bed ways under the glass transition temperature
only means the early layers are not stretchable any more.
We use heating bed because we want the first layers to stay flexible.
Through, maybe 85°C allows a good bound on your print surface.
But these are two different things.
Like you, I don't use cooling fans with ABS.
But bridges and overhangs can't be very clean.
Each material have its own properties.
++JM
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