Prusa i3 - stuck filament September 07, 2014 10:40AM |
Registered: 9 years ago Posts: 10 |
Re: Prusa i3 - stuck filament September 07, 2014 07:49PM |
Registered: 10 years ago Posts: 477 |
Re: Prusa i3 - stuck filament September 08, 2014 08:42AM |
Registered: 9 years ago Posts: 10 |
Quote
SteveRoy
The heat from the nozzle is probably creeping up the extruder tube causing the filament to expand.
I see from the video you have 2 fans running, one looks like it cools the print, the other? does it cool the motor or tube? (if there is a tube - hard to tell)
Steve
Re: Prusa i3 - stuck filament September 08, 2014 05:51PM |
Registered: 10 years ago Posts: 581 |
Re: Prusa i3 - stuck filament September 08, 2014 08:01PM |
Registered: 9 years ago Posts: 10 |
Quote
3dkarma
In between the heater element (the aluminium block above the nozzle) and the extruder, you should have a heat sink cooled by a fan directed at it. All the heat from the heater element is traveling up to the extruder and causing your filament to soften and expand. Your extruder won't be able to push the filament through. Take a look at the E3D hot end and you'll see what I mean.
Re: Prusa i3 - stuck filament September 09, 2014 02:59AM |
Registered: 10 years ago Posts: 581 |
Re: Prusa i3 - stuck filament September 09, 2014 06:08PM |
Registered: 9 years ago Posts: 10 |
Quote
3dkarma
If you do get a new pipe made, putting a teflon tube inside will limit the maximum temperature it will reach, but it will still be good for ABS temperatures. If you decide against a teflon tube, make sure the inside of the metal tube gets highly polished, otherwise filament will stick inside and you'll be back to your old problem.
Re: Prusa i3 - stuck filament September 16, 2014 07:19PM |
Registered: 9 years ago Posts: 10 |
Re: Prusa i3 - stuck filament September 16, 2014 07:51PM |
Registered: 10 years ago Posts: 477 |
Re: Prusa i3 - stuck filament September 17, 2014 02:59AM |
Registered: 10 years ago Posts: 581 |
Re: Prusa i3 - stuck filament September 18, 2014 09:00PM |
Registered: 9 years ago Posts: 10 |
Quote
3dkarma
Filament's definitely expanding too much. That grinding paste is for hardened valves, so it's going to tip into the barrel like it's butter.
Can't see in the pictures - where's that fan with the heat sink attached? It looks like it's got thermal compound on it.
Re: Prusa i3 - stuck filament September 20, 2014 02:18PM |
Registered: 9 years ago Posts: 10 |
Re: Prusa i3 - stuck filament September 20, 2014 04:08PM |
Registered: 10 years ago Posts: 581 |
Re: Prusa i3 - stuck filament September 20, 2014 05:14PM |
Registered: 9 years ago Posts: 10 |
Quote
3dkarma
That definitely looks like a vref problem on the stepper driver; either that or the stepper driver board is fried. You say you tried plugging it into the driver for one of the axes? Did it move properly then?
Do you know how to check the vref for a stepper driver? If so, what reading do you get?
Re: Prusa i3 - stuck filament September 20, 2014 06:52PM |
Registered: 10 years ago Posts: 581 |
Re: Prusa i3 - stuck filament September 27, 2014 09:40AM |
Registered: 9 years ago Posts: 10 |
Re: Prusa i3 - stuck filament October 30, 2014 03:53PM |
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Re: Prusa i3 - stuck filament November 30, 2014 09:58AM |
Registered: 9 years ago Posts: 1 |
Re: Prusa i3 - stuck filament November 30, 2014 10:14AM |
Registered: 9 years ago Posts: 2 |
Re: Prusa i3 - stuck filament December 09, 2014 10:22AM |
Registered: 9 years ago Posts: 4 |
Re: Prusa i3 - stuck filament December 16, 2014 01:19AM |
Registered: 10 years ago Posts: 20 |
Re: Prusa i3 - stuck filament December 16, 2014 08:27AM |
Registered: 9 years ago Posts: 4 |