Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
mich

Bowden cable keeps popping out of the quick-fit coupling

Recommended Posts

Hi all,

I am a proud new owner of a few weeks old Ultimaker. Until now, the machine has been performing fine and as a newbie, I've learnt quite a lot these past weeks. :smile:

Recently however, I am not able to print anymore, as the Bowden cable keeps popping out of the quick-fit coupling all the time. I did replace the tape around the Bowden cable (I came prepared like that from Ultimaker) and put it in tightly, but that does not help. The feeding is fine, the filament goes forward nicely, but I guess that the friction is simply too high when it passes from the feeder into the bowden cable. It seems that the QFC is simply not able to keep the Bowden cable fixed.

The filament i currently use is the grey PLA issued by Ultimaker. All the rest of the hardware is Ultimaker, no tweaks so far. I've been reading a bit in the forum and it seems that this is quite a common issue.

I've also found these two solutions:

http://www.thingiverse.com/thing:10799

http://www.thingiverse.com/thing:40544

I'm a bit uncomfortable with putting screws into the feed mechanism, so does there exist another solution? What did you guys do and what works best in your opinion?

Thanks in advance for your answers,

Mich

 

Share this post


Link to post
Share on other sites

So you have tape around the bowden where the connector bites? If that's the case, I would remove it. If you are having issues where the filament is grabbing the edge of the bowden tube and pushing it upward, you can try taking an angled razor and scrapping the inside of the bowden to increase the chamfer slightly. You don't have to worry too much about if you screwed it up, as you can trim the 1/2" or so that you can screw it up off and still reach all of the parts of the bed.

 

Share this post


Link to post
Share on other sites

Thanks a lot for the quick answers guys.

Unfortunately, its going from bad to worse. So far, I've removed that tape and I scraped the inside of the Bowden cable with a razor, to reduce chafing. This did not help, it's seems to be popping off even more often.

As for temp, speed and layer height: I've been printing with PLA, 100mm/sec max or slower, .1mm layer and around 210-220C.

And I've tried to print the diverse solutions you proposed, but the cable always comes off during the print. I even tried to hold it manually, but I don't want to force anything. Anyway, it came off again.

I did manage however to print the Ultimaker extruder clip (http://www.thingiverse.com/thing:46157), but it broke when I tried to put it on. :-| Now that I've changed to ABS, the Bowden cable comes off again.

I'll go to our FabLab tomorrow and print a few of the parts in ABS there. I'll keep you posted.

If you got any other ideas, I'll take them... :mrgreen:

Thanks for the help anyway.

Mich

 

Share this post


Link to post
Share on other sites

Temp sounds a bit low for 100 mm/s (context, I'm usually at 220 with about 50-60 mm/s). For the sake of troubleshooting, when are you getting the pops? Immediately? Five minutes in? 30 seconds? If you need to print something to make it work, you are likely going to need to slow it down to the 50-60 range until you get 'er dialed in.

 

Share this post


Link to post
Share on other sites

Hi guys,

Thanks for all the quick answers. I've now managed to print on a friends printer an Ultimaker extruder clip (http://www.thingiverse.com/thing:46157) as recommended by Francis and that works fine. I've been making some "torture tests" and so far it did not pop out a single time.

Thanks again for all the support, great community here!

Mich

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

Announcements

  • Our picks

    • Architect Design Contest | People
      The goal of this contest is to design a set of people figurines that could be used in such a project to make an area, office or mall seem populated. 
      Think of different types of people in different environments, like walking people, people standing still, working people, and both men and women.
       
      • 6 replies
    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!