Jump to content
Ultimaker Community of 3D Printing Experts
alexrosen

retraction issue at layer change Cura 2.7.0 Mac

Recommended Posts

Hi everybody,

I am trying to print thin wall (O.4) to make a model from 3D lab print.

I managed to solve most of the retraction issue except when there is a layer change.

"retract at layer change" is selected however it does retract right before starting the new layer and not at the end of the previous layer. I have then some lost filaments between the end of the layer and the next one.

Is there a way to fix that?

(I have tried different version of Cura)

Share this post


Link to post
Share on other sites

Thanks for your advises.

I already have a speed of 30 mm/sec and the temperature is 200 degrees. I am quiet happy with the result exept for that stringing between the end and the beginning of a layer.

The extruder should retract at the end of a layer and not at the beginning otherwise the retraction is useless.

Is there another box to check?

I could fix that issue by having the same point for the start/end of a layer. In that case no more stringing.

Any idea how to do that?

Share this post


Link to post
Share on other sites

I guess I need more information.

When cura slices a single layer it loops up all the line segments into loops or "islands". Typically a layer only has one island but very very often there are many islands on a given layer. Normally there is a retraction when leaving one island to go to another island.

Now that we have the word "island" defined...

Are you saying it finishes an island, moves the z axis, then retracts, then moves to a new island? or something else.

I think there is some limited control over what order things are done - shell first or shell last for example. This might affect this stringing you are talking about. Maybe a picture would help.

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

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 23 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!