Jump to content
Ultimaker Community of 3D Printing Experts
piphil

First layer sizing

Recommended Posts

We've recently purchased an Ultimaker 3 Extended at work, and so far we're pretty impressed with it.

 

One thing I have noticed is that if I build a cube (or any straight-sided part directly off the build plate) that the first layer is always a little bigger than the rest of the model, leaving a sharp ridge around the bottom of the part which throws the part tolerance off a little. I've otherwise been pleasantly surprised by how good the tolerances are on the U3E.

 

(This is when the 'Build Plate Adhesion' setting is turned off, before anyone thinks I'm really confused!)

 

This sort of initial inaccuracy is something I've noticed before on other FDM/FFF printers. I could get rid of it by rounding or chamfering the bottom edge, but is it not possible to correct for it in the printer settings? As it's quite a common thing to see, does the effect have a name?

Share this post


Link to post
Share on other sites
On 2/22/2018 at 5:58 PM, piphil said:

This sort of initial inaccuracy is something I've noticed before on other FDM/FFF printers. I could get rid of it by rounding or chamfering the bottom edge, but is it not possible to correct for it in the printer settings? As it's quite a common thing to see, does the effect have a name?

 

In Cura you can influence this with the setting (Shell ->) "Initial Layer Horizontal Expansion" (read the comments).

 

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

    • Introducing Ultimaker Cura 3.6 | Beta
      Ultimaker Cura 3.6 | Beta is available. It comes with new features, bug fixes, and UX improvements. We would really like to have your feedback on it to make our stable release as good as it can be. As always, you can download the beta for free from our website, for Windows, MacOS, and Linux.
        • Like
      • 92 replies
    • Print Core CC | Red for Ruby
      Q: For some users, abrasive materials may be a new subject matter. Can you explain what it is that makes a material abrasive when you are not sure which print core to use?
      A: Materials which are hard in a solid piece (like metals, ceramics and carbon fibers) will generally also wear down the nozzle. In general one should assume...
        • Like
      • 30 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!