Jump to content

Improve quality of layer other than top layer?


Jpileggi

Recommended Posts

Posted · Improve quality of layer other than top layer?

In the attached pic, the layer that I want to look great is not the top layer. It is the large flat layer. Is there a way to maximize the quality of that layer in Cura? Am I correct in assuming that a skin layer would be added to the very top (in this case non-critical) layer?

 

Thank you.

image000000(66).jpg

  • Link to post
    Share on other sites

    Posted · Improve quality of layer other than top layer?

    It depends on what it is printing over.  If it's sparse infill then adding another top layer should fix it.  From what I can see of that image there looks to be a checkerboard pattern.  That can be indicative of the infill still affecting the layers above.

  • Link to post
    Share on other sites

    Posted · Improve quality of layer other than top layer?

    How do layers 2, 3, 4 look?  If they are OK and if you are printing 100% infill anyway then maybe changing to 50 top/bottom layers would be better than 100% infill on that piece.

    It's possible a flow adjustment might be in order.  What size nozzle and what is your line width?

  • Link to post
    Share on other sites

    Posted · Improve quality of layer other than top layer?

    I'm using a 0.4 mm nozzle with the same line width.  I was able to improve by reducing the flow rate.

     

    But this is exactly my question. Changing the top layer infill would not affect the flat surface since it's not the top layer, correct? Is there a way to change parameters on that layer since it is not the top layer?

  • Link to post
    Share on other sites

    Posted · Improve quality of layer other than top layer?

    If I understand correctly - what you want is the other way around.

    If you set "top layers" to a number > 0 then the "Top Surface Skin Layers" setting is enabled.  When that is > 0 then "Top Surface Skin Flow" is available.

    So your general settings would be to get the intermediate layers correct, and then have separate flow setting for the number of "top skins" you set.

    If your printer allows for it - have you calibrated the E-steps?  When Cura tells the printer to push 100mm of filament then exactly 100mm's of filament should be fed through the extruder.

     

  • Link to post
    Share on other sites

    Posted · Improve quality of layer other than top layer?

    Thanks for your willingness to help me here.

     

    Yes, I have calibrated E-steps.

     

    So this print has 26 layers. Layer 8 is the top layer of the flat surface that I want to optimize. Are you saying that I would need to set the number of top layers and skin layers to 19 in order to optimize layer 8?

  • Link to post
    Share on other sites

    Posted · Improve quality of layer other than top layer?

    A "top layer" would include that layer also.  It isn't the top of the part but rather the top skin of any area.

    Usually, if there is over/under extrusion it is everywhere.  There really shouldn't be any need to have different settings for the lower skins than for the top skin.

    Have you tried ironing?  That leaves a pretty nice surface.  Like everything else, it will need tweaking.  The default flow in the ironing settings is 10% but I found that to be too much for my printer and the nozzle pushed ridges around.  At 7% flow for ironing the surface looks very good.  Leave the "Iron only highest layer" box un-checked and I would suggest you turn on "Monotonic ironing order".

     

  • 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 the UltiMaker Factor 4
        We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
          • Like
        • 2 replies
      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
         
          • Like
        • 26 replies
    ×
    ×
    • Create New...