Jump to content
Cura Connect | Survey Read more... ×
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
g0ultimaker

Extrudate calculation

Recommended Posts

Hello,

I’m doing some research on Cura with my Ultimaker2 momentarily on how it calculates the amount of extrudate, E-values.

I saw a topic on extrudable.me about how to calculate the difference between the expected volume and the extruded volume. http://www.extrudable.me/2013/11/03/slic3r-strange-defaults-causing-qu-bd-woes/

But if a do so the expected and extruded volumes don’t match up (see figure).

What am I doing wrong?

 

% extruded

 

The g-code is some lines from: UM2 - Extrusion Test - NoRet - 3-10mm3.gcode

With I belief a width of 0,4 mm (nozzle size) and a layer height of 0,25mm.

My formulas are in yellow.

Can anyone explain where the difference comes from?

 

Share this post


Link to post
Share on other sites

There's a couple of things going on here. Firstly, UltiGcode E-coordinates are in cubic mm, not linear mm of filament fed in. Secondly, you're running the calculation on the first layer, which is only 0.2mm thick, not 0.25 like the rest of them.

If you adjust for those things, that should get the numbers where they are supposed to be.

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

    • Architect Design Contest | People
      The goal of this contest is to design a set of people figurines that could be used in such a project to make an area, office or mall seem populated. 
      Think of different types of people in different environments, like walking people, people standing still, working people, and both men and women.
       
      • 8 replies
    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 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!