When I ordered my Ultimaker 2, I was very excited about all the special filaments out there. Woodfill was my favorite. There was only one issue: It didn’t print. It got stuck in the nozzle every single time. I used the profile found on the colorfabb website, tweaked every single aspect of it but it simply wouldn’t print.
Finally with some help of the 3DHubs community and a print-buddy I managed to create my recipe for successfully printing Colorfabb Woodfill.
Now for a special filament like Woodfill you have to change some settings on the Ultimaker 2. First of all the material settings, which you can set and save. Secondly you need to change the retraction settings. Sadly, you can only change these as part of the ‘Tune’ function during printing. This means that you have to change these every single time.
I found a solution to that. If you change the ‘Gcode flavor’ setting of your printer in Cura to Reprap (Marlin/Sprinter) you suddenly get the option to set printer temperatures and retraction settings in Cura. Now I personally don’t want to always use this, so I added a second machine to Cura with this setting.
To do this, go to ‘Machine’ –> ‘Add new machine’ and add a second Ultimaker 2. You can change the name to something like ‘Ultimaker 2 Reprap’ or whatever you like to distinct it from the default Ulitmaker you already had.
Now download and unzip this file for my two Woodfill printer profiles.
Now go to ‘File’ –> ‘Open Profile’ and open the file for 20um or 15um. You’ll see that the settings change. Here are the settings for 20um (0.20mm):
I’ve also added two lines to the starting gcode. One to bring the nozzle to front, and one to extrude 30mm of material before starting to print. This is essential, since without this your first layer will fail the first time you try.
Now open your stl in Cura and simply save the gcode. Don’t forget to enable supports when necessary. When starting the print you will get a warning that this print will override your printer settings. That is ok.
I’ve printed 3 objects without failure with these settings, and the fourth is printing as we speak.
**Disclaimer: Use this information / profiles at your own risk**