Jump to content
Ultimaker Community of 3D Printing Experts

Using dynamic layer height to print objects of height that is not a multiple


Recommended Posts

Posted · Using dynamic layer height to print objects of height that is not a multiple

I have made a test cube of 10x10x10.1mm (last one being the height). When slicing I want to match the actual object size perfectly, or at least where possible (though in my cube example it must be possible)

 

Obviously it can be done with a .1 layer height, but I want to cover a more abstract problem where the you can't just change the general layer height, not even considering the increased time of printing. Let's say 10.01mm, would you print at .01mm?..

 

If my layer height is .3, both my examples can be fixed as this: first example: print the last layer at .2; second example: print the last layer at .21. In my case I chose to go with a target of .3 layer height, aka "always prioritize using .3mm and use other sizes only where needed"

 

I took a look at using adaptive layers but it seems to solve just a similar problem to mine, and is NOT filling the whole cube. I'm left with the gray outline at the top of the cube which means there are parts of object not covered by layers (presumably a new layer cannot fit there)

 

Ok so now some reproducible example. I have a similar cube, but of .3mm height. Layer height is .2mm, so this means that the slicer should be able to put a .1mm layer height (since the first layer has a separate fixed layer height, which is .2mm in this case). As you can expect since I made this post.. it doesn't work..

 

image.thumb.png.d2ec3a47d6e2a2ec87340f1e78304564.png

 

Maximum variation: my nozzle should be able to handle .1 to .3mm, and since I'm at .2, then the setting of .1 should cover all the available range (including our prediction)

 

Variation step size: i don't really want any smooth transition, so ideally we would use something like 9999. i have played with both 9999 and .1 (which is in the photo): same result. it would've make more sense if this setting was referring to the steps in our .1-.3 range. as example, if the setting was set to .01, then we would have <(max-min)/step+1> steps, which is (.3-.1)/.01+1 = 21 possible layer heights to choose from (including our expected .2 and .1). again: looks like adaptive layers is not trying to solve my specific problem, so variation step size has a different meaning

 

Topography size: i played with this one too, including 0. in my problem, no such thing exists, layer height should change regardless of horizontal distance

 

Doing some dirty tricks here and there will get the cube to work, but they are obviously not made to work that way, and would fail if used for more advanced objects where we have multiple tips/tops of different heights to satisfy

  • 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
     Share

    • Our picks

      • Ultimaker showcase | April 2022 | 4pm CEST | 10am EDT
        I'm excited because I've personally produced this showcase event, so if you are curious what else I'm up to nowadays, come check it out and say hi in the chat! It would mean a lot! 
          • Thanks
          • Like
        • 4 replies
      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 11 replies
    ×
    ×
    • Create New...