Jump to content
Ultimaker Community of 3D Printing Experts
Gio26

Is this backslash?

Recommended Posts

Hello,
I can not improve the print on one side. 
With all the prints I've done, with various filaments (pva, abs, cpe+) and different settings of cura, I always find that the faces on the X axis have lines while on the Y axis I would say that goes much better.
I always thought it was a problem on the Y axis and so I checked the play and re-aligned the axes several times, but I could not get any improvement.

What could it be?

Attached one of the first prints I made with um3, the wall is very thin and with white you can see more clearly.

Thanks.

 

X:

X.thumb.JPG.1ca462f7b1c843fa8275e3295c549945.JPG

 

Y:

Y.thumb.JPG.0e7cb26f9de26eb806d6bfa908fe47fb.JPG

 

Share this post


Link to post
Share on other sites

I see very similar results on some objects, not all and hardly depending on the shape of the object. First I also thought it is a backlash, but it wasn't. Then I tried a different slicer and also different printer and got everywhere the same result. So I guess there is something wrong with the source file. You can check it in layer view of Cura if you see something strange there, but I don't think you will see much there.

 

What helped was to print slower.

Share this post


Link to post
Share on other sites

I don't see nothing wrong in cura and if I rotate the object I always get the same result.

I got same result with my object and also with a lot of thingiverse object.

I'm thinking that maybe it could be the head bearing on the Y axis... maybe.. I really don't know.

About speed, I print at these speeds:

Infill: 28

Wall:28

Outer Wall:19

Inner Wall: 28

Top/bottom:28

You think I'm too fast?

 

Acceleration and jerk as default.

 

Thanks.

Share this post


Link to post
Share on other sites

If you are talking about sort of irregular ribs along the height, could it have to do with the Z-axis (dirt, play,...)? Or with the heat of the nozzle (and thus changes in viscosity)? Or related: with other currents influencing the temperature measurements (e.g. the high current of the build-plate heater causing a shift in ground level of the heat sensor, and thus tiny errors in measurment)? Or with the filament sliding smoother or less smooth while unwinding (thus less or more resistance, and flow)? Or something along this lines? This is guessing, but somewhat educated guessing.

 

The deformation on the bottom seems to be elephant feet, probably due to the heated buildplate and the first layers sagging a bit, or to the squeezing of the first layer onto the glass and spreading a bit. Or both.

 

Share this post


Link to post
Share on other sites

Thanks geert.

I looked at the Z axis and cleaned it. It has a little play (about 2mm) of upward. I don't know if this can be a problem. 

 

You are right about the bottom. Was one of my first print.

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

    • 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!