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

I just want a round cylinder

Recommended Posts

After trying tinkercad and sketchup, if I design cylinder it is not well rounded and after printing it it looks horrible. You can see the faces of the polygons used to create the circle.

Could you please recommend me a CAD software where I can select the number of polygons for a cylinder, or at least the default value is good enough to have a rounded one?

Thanks in advance.


Share this post

Link to post
Share on other sites

I think must CAD programs will represent a cylinder as a mathematical cylinder. The issue is I believe that STLs are polygon based so the object in the CAD program has to undergo tessellation resulting in the surfaces you see.

DesignSpark Mechanical lets you control the surface generation was you "Save as STL". Look for similar options in other programs.

The unavoidable issue is that the more surfaces you use to get a smoother look, the longer Cura takes to slice the object


Share this post

Link to post
Share on other sites

I have increased wall thickness and the result is the same.

BTW, the ugly wall is visible in the inside face as well. :-| :-|


See the topic I linked, might be related to a bug in the latest official Cura


Share this post

Link to post
Share on other sites

20x20 cylinders printed on a UM1 generated out of DesignSpark Mechanical.....


One has twice the number of faces as the other but I can't tell which. I think I'm at the limit of the UM1's resolution.


Cura 14.04-RC1

Layer 0.1mm

Shell 0.8

Bottom/Top .6

Fill: 0

Speed 50


Share this post

Link to post
Share on other sites

I found previous version in my computer....

2 hours and 43minutes printing time with previous version

7 hours with latest version...

the same model, of course...and same settings...

We need a solution!!!

I going to print with old version... more tomorrow.


Share this post

Link to post
Share on other sites

They were sliced with Cura 14.04-RC1. I did notice that there is a significant seam on the inside but they were solid so Cura may have did something such that it didn't attempt to create an internal finished surface.

Looks like you can get older versions here : http://software.ultimaker.com/?show=all

The betas are closed but you can get them if you know were to look on the forums.


Share this post

Link to post
Share on other sites

So... a comparison


Left, last version of cura, 7 hours...right previous version, less than 3 hours.

I imagine the amount of people thinking the their printer is faulty.... and the problem is Cura...

Circles on the bottom, right part, duo to playing with settings.


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  

  • 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.
      • 0 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!