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

Retraction working fine but not always applied when travelling

Recommended Posts

Hi together,

somehow retraction is not always applied for travel moves. The model I'm printing has the same crosssection all the time and a lot travels have to be made. Most places retraction is applied, but sometimes its not. Thus I have strings whenever this is the case.

Minimum travel setting (1,5mm) is way lower than the travel distance. combing enabled. -I'm on a deltatower.

Any suggestions?

 

Share this post


Link to post
Share on other sites

If combing is enabled, then it won't retract on moves within the 'interior' of the object.

Also, the 'minimal extrusion distance' is applied - Cura won't fire a second retraction until that much filament has been printed, to avoid grinding over the same spot. This distance is measured in mm of filament input into the printer.

Share this post


Link to post
Share on other sites

Thanks illuminarti,

 

in the pic you can see the model. Min extrusion is set to 0.02mm.

 

If combing is enabled, then it won't retract on moves within the 'interior' of the object.

 

-all other moves are in the interior as well, but here retraction is done. the move on the very bottom is one that is without retraction and causes strings, most others are fine.

 

retraction Not applied

 

Share this post


Link to post
Share on other sites

That could very well be the "minimal extrusion before retraction" kicking in, as it moves from the right to the left and did a retraction just before the spot where it needed to do a new retraction.

This feature has been implemented not to make the prints look better, but to prevent problems with jamming printers. You could put the setting to 0 if you are not afraid that you will jam your feeder.

 

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  

×

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!