Hello,
When I am trying to print something on my home made 3D printer, I can print the first and second layer, then the extruder's toothed wheel starts slipping; it cannot push the filament anymore,the toothed wheel is turning but slipping; the filament cannot go forward. I tried all configurations of the tightening screw of the spring but no result. It seems the nozzle is obstructed but I see no reason for this (I am using PLA and tried with 200°C, then 205°C, then 210°C, but same result). My extruder is 20 cm away from the hotend (mounted at side pillar) and the filament reaches the hotend through a teflon tube.
Any suggestions ?
Extruder problem
Extruder problem
Last edited by Seapeace on July 2nd, 2019, 3:54 am, edited 1 time in total.
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GrueMaster
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- Posts: 522
- Joined: March 15th, 2017, 8:46 pm
- Location: Oregon
- 3D Printer(s): Hictop 3DP-17, Hictop CR-10S
Re: Extruder problem
Make sure the teflon inside the hotend is pushed all the way down so it has no gaps between it and the brass nozzle. You may have to replace the teflon tube, if you don't have a very straight flat cut on the end.
Re: Extruder problem
Hi,
Thanks for your message. Normally the brass nozzle is at the bottom of the aluminium heat sink and the tube adapter at top. I can push the teflon tube just inside the adapter as much as it goes down.
By the way, I've been playing with PID settings and after a manual correction, I think I obtained some ameliorations and the extruder seems to push the filament. I am still checking whether this is a definitive solution.
Thanks for your message. Normally the brass nozzle is at the bottom of the aluminium heat sink and the tube adapter at top. I can push the teflon tube just inside the adapter as much as it goes down.
By the way, I've been playing with PID settings and after a manual correction, I think I obtained some ameliorations and the extruder seems to push the filament. I am still checking whether this is a definitive solution.
Re: Extruder problem
The stepper toothed wheel is moving but the mechanical counter gear is not moving. This typical issue comes from the fact that your filament is getting blocked quickly at the nozzle end. try the following remedies .
1. Extrude filament manually until you see a good filament melt down at the nozzle.
2. If point # 1 doesn't succeed , push the filament while pressing the tension spring loader mechanism , manually with your hand to see if filament
extrudes at the nozzle.
3. if point 2 doesn't work, use a 1.75 mm tool and manually push through the nozzle from the top . This should remove all the clogs.
4. If point #3 doesn't succeed much, pressure spray WD40 through the top until it falls down through the nozzle to the table top.
All the above procedures are done while the filament remains heated at its melting temperature.
1. Extrude filament manually until you see a good filament melt down at the nozzle.
2. If point # 1 doesn't succeed , push the filament while pressing the tension spring loader mechanism , manually with your hand to see if filament
extrudes at the nozzle.
3. if point 2 doesn't work, use a 1.75 mm tool and manually push through the nozzle from the top . This should remove all the clogs.
4. If point #3 doesn't succeed much, pressure spray WD40 through the top until it falls down through the nozzle to the table top.
All the above procedures are done while the filament remains heated at its melting temperature.
Re: Extruder problem
Dear, the teflon tubing will not reach the brass nozzle else it will melt down. it only goes down to some extent of obstacle within the head blockGrueMaster wrote: ↑July 1st, 2019, 10:01 am Make sure the teflon inside the hotend is pushed all the way down so it has no gaps between it and the brass nozzle. You may have to replace the teflon tube, if you don't have a very straight flat cut on the end.