Jump to content
Ultimaker Community of 3D Printing Experts

floating, unsupported overhangs in Cura

Recommended Posts

I'm having this problem fairly regularly with the latest Cura 15.04.2 where it will leave some overhanging geometry entirely unsupported. In the past, when I notice in time, I have been able to resolve the issue by orienting the model in a different way on the build bed, but sometimes that doesn't even work or it results in super long print time that shouldn't be necessary if Cura would just be smarter about the placement of the support material.

here is one example:


The geometry indicated with the green arrow should go up at an angle and eventually meet the main dome structure, but it will never make it that far because all of its initial layers are being printed in mid air... I already reoriented this model once to fix a much worse floating overhang, but still Cura insists that these hooks (which are an important mechanical attachment feature in this print) can be printed in mid air. Unfortunately I didn't see this one in time and now more than halfway through my 16 hour print, there is a wad of spaghetti hanging off of my model where attachment hooks should be.

I suppose changing the value for overhang angle for support could fix the issue, but this also would add a significant amount of support material to the domed inside of my model where it actually isn't necessary.

Very frustrated. Any ideas or suggestions are greatly appreciated.




Share this post

Link to post
Share on other sites

Its a good read, but again i dont agree with all of it. And having to change my designs for ones that will print better is not always an option, and the whole cant print sharp corners seem like total BS as i have been printing nothing but sharp cornered objects lately with zero issues, so i take all that with a grain of salt. The theory behind it is sound however.

I would just experiment for yourself to see what you particularly have trouble printing and go from there. Don't concern yourself too much over having to model everything printer friendly, its not always or very likely necessary. different resolutions and filament make things more possible than others as well as many other factors. I only really have issues with sharp inclines, gaps, large circular holes and auto support for small objects.

My 'sharp' corners.



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

    • Ultimaker Cura | a new interface
      We're not only trying to always make Ultimaker Cura better with the usual new features and improvements we build, but we're also trying to make it more pleasant to operate. The interface was the focus for the upcoming release, from which we would already like to present you the first glance. 
        • Like
      • 114 replies
    • "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!