Thank you. I've tried that and it's stopped the bowden tube jumping now but no plastic is being extruded when set to print????
Thank you. I've tried that and it's stopped the bowden tube jumping now but no plastic is being extruded when set to print????
I have the printer extruding now but I'm getting really bad prints. The first couple of layers no PLA is extruded and then when it does start to extrude, there are small holes in the latices of each layer when set to 100% fill (which I need to print water-tight chambers). I've tried adjusting the z stepper and balancing the print bed but I just end up with the same problem. Can anyone suggest anything???
Just some thoughts:
What is the status of your teflon part. Is the bowden tube clean.
Can you by hand extrude and how easy is that. Is there a indication on the filament that it is grinding. Or do you need to tune the pressure on the filament at the extruder. Is the extruder wheel clean.
Thanks!
The bowden tube is clean and so is the extruder wheel. It is easy to manually extrude (like normal). There is no idication of grinding on the filament.
What speed and layer height are you printing?
I've tried printing at 0.06mm, 0.08mm, and 0.1mm layer heights and I've set the speed at 50mm/sec.
I have been printing with 0.1 at 50mm/s without issues. Although later I had to lower it to 40mm/s due to a deformed teflon part (have been printing ABS as well which causes your teflon part to deform in the end).
So it beats me why you have such large holes in the print.
well,i also have the same question.I still can not slove it.
Peter please do a few things for us:
Please post a picture of your issue - all underextrusion issues are not the same. So please post a picture of the part that you are having trouble with - or at least the first layer which has special case issues (if there is a problem there).
Also please report to us:
1) Type of printer you are using
2) Slicer (cura?)
3) temperature, layer height, print speed. These 3 parameters work together to give you either underextrusion or not:
http://umforum.ultimaker.com/index.php?/topic/4127-um2-extrusion-rates-revisited/
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tinkergnome 926
This should definitely not happen and is an explanation for the extrusion problems...
You can try to cut off a few millimeters of the bowden tube (with a sharp knife) - so that the bite marks 'move' to another position.
The bowden tube has to be firmly attached before you go on with further investigations... (IMHO)
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