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Juddering

 Anybody getting a juddering or stuttering from the filament feed when printing small or complicated parts, its not a blockage as it works fine on longer runs, also occurs on the skirt and sometimes pauses in a print briefly depositing a lump right in the wrong place?

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3 people have this problem

I have the same, I reduced the print speed to 2000mm/min, to remedy. I sent a support ticket to lpfrg, the sent me two new "drivers" (extruders). 


I haven't tried them yet.  

It seems to be more the slower speeds than the high speeds that are a problem, I'am printing at 3500mm/min, it seems to me the stepper motors are not working properly at slow speeds and isn't the HS printer supposed to work at speeds of up to 18000mm/min?

 

Yes but you have to adjust with the "extrusion multiplier", mine is set at 0.84, lpfrg recommend 0.95. Anyway I got mine to work at these settings,. It's going to be interesting if new extruders will solve this. I'm dubious, I think the actual "drivers" for the stepper motor is where to find the solution. I suggest you submit a support ticket, lpfrg where fact to reply and solve in my case

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I already have the "extrusion multiplier" set to 0.9, I think the problem is the internal processor cannot handle the large amount of data required to do small circles or wavy infill etc.

 

I would say keep lowering that value in correlation to the speed, until the juddering stops, yes it is most noticeable when doing small radius bends etc. From my experience bowden set-up generally needs a geared extruder, the torque and acceleration needed means that one puts a lot of strain on a motor not really suited for it. The system relies heavily on the drivers ability to handle the current to the stepper motor, better drivers means better ability to "drive" the motor. You can find more info here: http://reprap.org/wiki/Stepper_motor_driver But this is my opinion, I will let lpfrg handle this now until it's resolved
The only trouble is the juddering mainly occurs when running tethered to the computer, if you use the usb dongle it runs smoothly. Seems like a communication problem in that the data is not transferred quickly as the carriage judders also.
I see, I tried running USB on my printer, but it did little to remedy the issue as far as I can remember., but I'll certainly try again, just to be sure.
I have no found out what was causing the problem and rectified it, in the knowledge base

 are new settings for communication follow link http://creatrhs.lpfrg.com/support/solutions/articles/1000167291-how-to-configure-simplify-3d-for-better-connection-to-the-pc

This adjusts the buffer rate for communication between computer and printer now no juddering.

Why cant leapfrog email customers of these changes instead of having to stumble upon them randomly?

Others include


Better temperature control

http://creatrhs.lpfrg.com/support/solutions/articles/1000158721-how-to-install-you-pid-firmware-update


Updated Display for easier connection between computer and printer

http://creatrhs.lpfrg.com/support/solutions/articles/1000167961-how-to-install-the-display-update-to-establish-a-successful-pc-connection


Hope this helps

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User Manual

Quick Start Guide

Installation clips
The following 3 clips will guide you through the installation process of your CreatrXL. 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 CreatrXL

In this clip, you will be guided through the unpacking of a brand new CreatrXL. 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 CreatrXL 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 CreatrXL 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 CreatrXL!

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 CreatrXL. 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

Drivers Downloads

Software Downloads

Firmware Downloads

Please request a firmware download via the Ticket System

Creatr XL Video Library