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Post by l7arkness on Nov 3, 2016 18:13:48 GMT
Hello im in need of some advice im basically throwing ideas at the wall at this point Ok so those are photos of my latest print as you might see it is under extruding (I assume) and i can not find the cause So here is what i have already done Cleaned the nozzel/extruder/hotend 4 times Changed the settings in cura to the default profile from Printrbot Changed the temperature settings from 190 to 240 in 10 degree incarments with varied results Printed multiple models Printed single models Prayed to the 3d printing gods Ran about 3' of filament through the hot end without brass nozzel Ran about 3' of filament through the extruder Made small blood sacrifice to the almighty printer gods thanks to sharp drill bit Thought about something happy My specs Printrbot Simple Metal .4mm Nozzle 1.75 PLA 3D-Solutech Cura Slicer
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Post by Meph on Nov 3, 2016 18:26:58 GMT
Have you printed that model before and are you getting similar results with other models?
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Post by l7arkness on Nov 3, 2016 18:39:25 GMT
No and yes
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Post by curufin on Nov 3, 2016 19:31:15 GMT
I had a similar problem a couple of months ago. I ripped apart my whole printer. The internet said it was likely a clogged brass tip, but after I cleaned it, there was no change. The printer often 'clicked' like the extruder motor was struggling to push the filament through the hotend. The problem ended up being the 2 inch piece of PTFE tube inside the Hotend had warped just a little. That little extra friction was creating a jam, which resulted in under extrusion. I simply replaced it with the extra piece that came with the printer (though I bought an extra meter of tube to have on hand).
Check your PTFE tube. That may be the cause.
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Post by l7arkness on Nov 3, 2016 19:50:17 GMT
I had a similar problem a couple of months ago. I ripped apart my whole printer. The internet said it was likely a clogged brass tip, but after I cleaned it, there was no change. The printer often 'clicked' like the extruder motor was struggling to push the filament through the hotend. The problem ended up being the 2 inch piece of PTFE tube inside the Hotend had warped just a little. That little extra friction was creating a jam, which resulted in under extrusion. I simply replaced it with the extra piece that came with the printer (though I bought an extra meter of tube to have on hand). Check your PTFE tube. That may be the cause. Thanks for the tip but apparently i have the older or at least different still hot end (Not mine but same model)
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Post by curufin on Nov 3, 2016 20:01:42 GMT
Hmmmm....what happens if you take that nut off? There should be a little piece of Teflon tube somewhere between the stepper motor and the brass tip. Good luck!
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Post by Meph on Nov 3, 2016 20:16:35 GMT
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Post by fantascientist on Nov 4, 2016 5:28:30 GMT
Have you had successful prints before? Maybe the e steps per mm of your printer is set incorrectly. Here's how you can do it: www.printrbottalk.com/wiki/index.php?title=Extruder_CalibrationAlthough it says that you need to do it every time you change filament you don't need to, in my experience once it's set correctly you don't have to look at it again. I'm not using printrbot though, so ymmv.
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Post by l7arkness on Nov 4, 2016 12:37:07 GMT
If i end up changing hot ends its not the end of the world ive been wanting to upgrade to a ed3 hot end, so far i have it printing again looks like i still have a little under extrusion but that might be a small clog i plan on taking the whole hot end out and reaming as much of the plastic out as possible
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