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Extruder jams

I have a problem with printing with ABS, and i am out of ideas! Please help! I cannot get my Creatr to print ABS for more than an hour. Every time, at some point in the print, the extruder will jam. I cannot figure out how this happens. Printing with PLA works fine!


The sympoms:

- printing the bottomlayer works fine (i think because it happens at 30% of the speed)

- print sticks well to the bottom plate (at 90 degrees with the print stickers)

- problems occur on higher layers, most of the time during infill and small sections (is already decreased the speed in the slicer to 30 mm/s, it still happens).

- Temperature looks stable (within 1 degree margin) according to repertier.

- when clogging, the driver gear of the feeder motor slips (has no more grip on the filament), or when i make the distance smaller (using the instructions in the manual) it will push the filament out sideways between the gear and the extruder entry.

- The extruder head is clean (is tried a new one, same results), manual extrusion extrudes a nice straight line.

- When the jam is cleared, it blocks again very soon (most of the time i cant even get it to extrude manually for more than 20 cm.)


The configurations i tried:

- I use repertier host 0.95 (the leapfrog version)

- I have a Creatr with two extruders.

- Two different rolls of filament. Both show the same result

- Filament temperatures: below 230 degrees it will always block. (even manual feed with repertier host at 50mm/min) so i tested between 230 and 245 degrees. at 245, airbubbles will appear in the extruded filament so i won't go higher.

- Guiding tube has little to no resistence. At the time of blocking, it isn't stuck or anything

- I have already replaced the nozzle, the heatblock, the heatsensor, the two fans. 

- I have uploaded new firmware as described here

http://support.lpfrg.com/support/solutions/articles/1000084056-how-to-which-firmware-version-do-i-need-for-my-printer-

- My printer has a z-axis pully width of 20mm (model from 2012)

- I tested various retraction settings in repertier. none of which really work


Any suggestions?




>The extruder head is clean (is tried a new one, same results),

Did you change the entire hot end, or just the nozzle?


I have had issues at times with a partial blockage of the hot end tube. The hot end has a hard time extruding filament even with the nozzle removed.The fix was to replace the the hot end.


The last time this happened I was able to disassemble the hot end (including the internal Teflon sleeve) with the aid of some heat and clean it out. Haven't tried using it yet however.


Thanks for the remarks, I have replaced the whole hotend, but since it was new, and came assembled, i didn't take it apart. It looks like there was some metal scrapings inside. A good cleaning seems to have worked. Unfortunately i'm faced with another issue casing the printer to stop after half an hour, so i cannot fully test it yet.

 

Hello Andre,

Please check the temperature of the fillament drive motors.
On My printer they got too much power causing them to heat so much, the drive wheel is making the fillament weak before it goes into the extruder. Then the control of feed is lost. This occurs after 1/2 hour printing.
After reducing the output power on the print my problem is solved.

 

Hi J.vangorp


I have exactly same problem as yours and your explanation totally make sense, but how exactly can I reduce output power? 

I'm using a Xeed. The storage thing was that I was printing fine for a while, but now after an hours or even less an extuder and a motor gets really hot and filament jams there. Please give me an advice. 

The remedy is to raise the head temperature for PLA to 235 dergrees and cool the narrowing part between the extruder and the steppermotor. Also reduce the power to the steppermotor to the minimal value, so the motor just does not miss steps.

For ABS you will exceed the max temperature of the head, therefore you need to change the firmware safety. I did not do that because I use mostly PLA.

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User Manual

Quick Start Guide

Installation clips
The following 3 clips will guide you through the installation process of your Creatr. By following these, you will be printing within 30 minutes. First start with unpacking the printer. Clickhere to see how you correctly pick up the printer

Part 1 of 3: Unpacking your Creatr

In this clip, you will be guided through the unpacking of a brand new Creatr. The unboxing along with the location of tie wraps which need to be removed are shown, as well as the process of a connecting the cables to the printer and computer.

Part 2 of 3: Software and configuration

In this clip, we will show you how to install the required software. The first step is to download and install the Arduino software to make it possible for your computer to connect with the printer. The next step is to download and install the Repetier Host Leapfrog software or that controlls your 3D printer. We have tried to make this as simple as possible and also provided direct downloading links per operating system.

SIMPLIFY 3D SOFTWARE
If you are using the new Simplify 3D software you can follow all the steps except for the Repetier-Host Leapfrog installation and using explanation. Simply download the software via the purchase link and before first use a pop-up will appear showing you the Simplify 3D Quick start guide. You can also download the Quick start guide or access it from the software via help –> Quick start guide. The quick start guide will briefly explain the functions of the software so that you can start your first print.

Please select you operating system and follow the descriptions in the movie.

Operating systemWindows

The first step is to download and install the Arduino software to make it possible for your computer to connect with the printer. The next step is to download and install the newest version of the Repetier Host Leapfrog software as shown in the clip. This software allows you to convert your 3D software file [STL for example] to a printable file [G-Code] and allows you to control your printer. The Repetier Host Leapfrog software contains standard Creatr Print Profiles. Just select the extruder, the filament material as well as the color and Repetier will automatically select the ideal print temperature providing you the best print quality possible. There is also a Leapfrog support button implemented in the software. A Mac version will be available soon.

If you have followed the installation procedure, but you can’t control your Leapfrog Creatr and the “6 commands waiting” message in Repetier-Host Leapfrog won’t disappear, you have to install the 2.8.28 drivers. Please see Solution can’t connect 6 commands waiting in Repetier-Host Leapfrog how to do so.

For a more thorough description of Slic3s settings please check this guide!

Windows 8
To install the Arduino drivers on a computer with Windows 8 follow these steps after downloading the Arduino software.

- Save unsaved work and write the instructions down
[your computer will reboot into startup options screen]
- Press the Windows Key and the ‘R’ key simultaneously
- Copy the command inside the brackets
–>[ shutdown.exe /r /o /f /t 00 ] – Select ‘Troubleshoot’
- Select ‘Advanced options’
- Select ‘Startup Settings’
- Select ‘Disable Driver Signature Enforcement’
- Install driver as usual via device manager


Mac

In this clip, we will explain you how you can generate a STL file using Sketchup. We show you what to download and how to export your design in STL.

Part 3 of 3: Making your first print!

In this final clip, the process of creating your first print will be explained. This starts with removing the callibration print that is already on the print bed. How to insert the filament and operate the Repetier Host Leapfrog software is also shown, which should culminate in your first 3D Print on the Creatr!

Google sketchupHow to export STL files from Sketchup

The first step is to download and install the Arduino software to make it possible for your computer to connect with the printer. You will then need to in stall this driver for OSX to recognize the hardware.

The next step is to download the Repetier software as shown in the clip. This software allows you to convert your 3D software file [STL for example] to a printable file [G-Code] and allows you to control your printer. We have developed standard print profiles for the Creatr. Please follow the instructions below to install the print profiles for Mac [not yet included in the video]:

- Download This file
- Go to your Home Folder on Mac and select “Go to Folder” from the Go Menu en type “Library/Application Support/Slic3r/” - Unzip the file you just downloaded and dump the contents in the Slic3r folder, it will replace your existing settings. If you want to keep your current settings as well, take the contents from each folder and put this in the same folder in the Home/Libaray/App../Slic3r folder.

Download instructions by Deepak Dinesh Mehta For a more thorough description of Slic3s settings please check this guide!

Troubleshooting Trees

Filament Guide

ABS
  • Extrude at ~ 225o C.
  • Requires heated bed.
  • Works reasonably well without cooling.
  • Adheres best to polyimide tape.
  • Filament tolerances are usually tighter.
  • Prone to cracking, delamination, and wraping.
  • More flexible.
  • Can be bonded using adhesives or solvents(Acetone or MEK).
  • Fumes are unpleasent in enclosed areas.
  • Oil Based.
PLA
  • Extrude at ~ 180-225o C.
  • Benefits from heated bed.
  • Benefits greatly from cooling while printing.
  • Adheres well to a variety of surfaces.
  • Finer feature detail possible on a well calibrated machine.
  • Prone to curling of corners and overhangs.
  • More brittle.
  • Can be bonded using adhesives.
  • More pleasant smell when extruded.
  • Plant Based.

Demo Print Downloads

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Software Downloads

Firmware Downloads

Please request a firmware download via the Ticket System

Creatr Video Library