Jump to content

UM2 : Establishing a baseline ...


calimero

Recommended Posts

Posted · UM2 : Establishing a baseline ...

Hi everyone

I just got my UM2 a few hours ago. I installed it and ran the setup steps including of course leveling the build plate.

Here are three videos of my second print of the Ultimaker Robot test file (shipped on the SD card) with absolute default settings, with the supplied roll of blue PLA.

Nothing "obvious" to me in this video.

Different angle. Again nothing obviously wrong for my untrained eye.

 

  • Link to post
    Share on other sites

    Posted · UM2 : Establishing a baseline ...

    Continued ...

    Things get a little more interesting (or obvious ?) with the third video:

    If you skip to the 3 minute mark, you'll notice that the "serrations" ("rings" ?) of the robot's arm don't look the same on both sides. While the right arm (left of picture) is clearly defined, the "rings" of the left arm seem somehow fuzzy. It looks like it was at bit "squished" which I assume means build plate is not level ?

    What's your take ?

    Thanks for you help ! :)

     

  • Link to post
    Share on other sites

    Posted · UM2 : Establishing a baseline ...

    No. Might be cooling related (I'm on my phone at so haven't actually looked at the videos).

    But it's nothing to do with bed leveling. The head moves in a plane, and leaves a flat layer of plastic under the nozzle as it moves. Each layer builds on top of that. Therefore once you get past the first layer or two, the levelness of the bed is irrelevant: you're printing on top of the completely aligned layer of plastic below.

  • Link to post
    Share on other sites

    Posted · UM2 : Establishing a baseline ...

    It's a cooling issue. It looks like the fan on the right (the problem side) is fine. So I think it is simply that your bed is too hot. The default is 75C which is too hot. You will get much better results at 70C. It doesn't sound like much but it makes a diff. Most people use 60C. I usually use 60C but for very large parts I usually use 70C to keep the corners from lifting.

    The reason it isn't symmetrical is because the nozzle is to the left of center so the left fan has a better angle on cooling the part.

    Also the right fan is squished a bit. Look at the gap between the head and the fan on each side. It should be more like the fan on the left. You can just pry that apart with a screwdriver.

     

  • Link to post
    Share on other sites

    Posted · UM2 : Establishing a baseline ...

    Well, that's what you call consensus I guess. :)

    I'll do another print with bed temp down to 70 or even 65° and maybe another print with a different fan angle.

    Right now it's printing my first own design for one of my RC boats. We'll see how that goes.

    Thanks for your swift responses, guys ! :D

     

  • Link to post
    Share on other sites

    Posted · UM2 : Establishing a baseline ...

    If you want to get a baseline I recommend printing this part early on so that if you have problems later with underextrusion you can reprint the same thing and see if something changed (you only need to read the first post):

    http://umforum.ultimaker.com/index.php?/topic/4586-can-your-um2-printer-achieve-10mm3s-test-it-here/

     

  • Link to post
    Share on other sites

    Posted · UM2 : Establishing a baseline ...

    Will do. I'm in the middle of a 17h print right now. Bold choice for a fourth print but things look pretty good when I left home to go to work. :)

     

  • 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

      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
         
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 48 replies
    ×
    ×
    • Create New...