Jump to content
Ultimaker Community of 3D Printing Experts
Croy9000

Retraction issue?

Recommended Posts

UM3 with Cura 3.1.0. Every few layers I am getting these drag lines while the head travels quickly to another side (maybe at the end of the layer). In this image you can see the diagonal line that was printing on the previous layers every now and again, and now that its getting into details that are above the bottom, more lines are showing up.

.

I don't see these lines in the tool path animation. Its causing the layers above them to bulge up there. Is the issue the print head not retracting the material? Or the print head continuing to extrude? Any ideas?

IMG_0863.jpg?v=071250b4

Edited by Guest

Share this post


Link to post
Share on other sites

So after studying the g-code, and watching a simple test print I have narrowed down the issue. Its happening at the end of a layer, when the head travels to another side to start printing over there.

Looking at the Cura settings a retraction should be happening anytime the head travels more than 0.7mm (Retraction Minimum Travel). But this is not the case (my test print is >10mm in both directions). There is only 2 retractions being written to the g-code. One at the end of the brim, and one at the very end of the print.

Screen%20Shot%202017-12-08%20at%203.19.22%20PM.png?v=e2b841ef

Any input would be appreciated.

Share this post


Link to post
Share on other sites

So after even more research I think this might be "normal". Looking at this example of what Ultimaker calls a "good" print, it has what I assume is the same line https://ultimaker.com/en/resources/21330-what-does-a-successful-first-layer-look-like.

Also, I read somewhere today that this was a requested Cura feature. From what I can tell it helps to wipe the tip while traveling maybe?

Anyhow. I just wanted to make sure it was not an issue with my setup.

Edited by Guest

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

  • Our picks

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 1 reply
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 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!