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

Ultimaker 2 makes diagonal "scratches" solved

Recommended Posts

I recently bought a Ultimaker 2 and It works well except for one thing, after one layer is finished the extruder moves back diagonally to start printing the next layer but it makes a scratch in the layer it just printed even if it's the final layer.

I already have the newest firmware (14.03) and I tried to re-calibrate the printer but it didn't seem to work, is there something else that I could try to get rid of the scratches?


Share this post

Link to post
Share on other sites

Hi Tobias,

I am new to the Ultimaker also, so I could be wrong - but this sounds like an issue I have had before.

Have you tried to disable combing? This can be found in the Expert Settings of Cura.

It has also been suggested to me to use a plugin called RetractWhileCombing if you do not wish to disable combing.

Hope that helps.



Share this post

Link to post
Share on other sites

You're not doing anything wrong. These scratches are what Cura does when it calculates "head travel" (blue lines in Cura's layer view).

Maybe there's some way to avoid it, but this is the "standard" with Cura.

If you want to call it that, this is an error from Cura. Nothing wrong with the machine calibration or adjustments...


Share this post

Link to post
Share on other sites

If you disable combing it should add a retraction at the start of the move and may still "scratch" the surface but it will take a different path and will also ooze less PLA and so the scratch should not look as bad. You can look at the path in layer view before printing and if it has the vertical blue line then now it is doing a retraction first.

Obviously z hop will look even better. I haven't used this feature yet. It's recommended for delta printers which have to move all 3 axes on all moves anyway.

Sometimes the surface you want to look the best should instead go down and touch the bed.


Share this post

Link to post
Share on other sites

OK confused now. Laying down a thread of PLA on top of the layer is the opposite of scratching (engraving), it is embossing.

Confused from Chaganooka Choo Choo

If it is scratching, I have never had that.

If it is oozing then I sometimes get that from the movement after the first layer but nowhere else - so I put it down to Cura being recalcitrant.


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.
      • 2 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!